Category Archives: Intermediate

Senior Inter Botany – Nutrition Four Mark important questions

Senior Inter Botany – Mineral Nutrition Four Mark important questions

Botany Mineral Nutrition Important Four Mark Questions– Senior Intermediate BIE

Botany Senior Intermediate Important questions on Mineral Nutrition have been characterized to help students to score more marks and gets more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on this segment as well.

Q: What will happen if a healthy plant is supplied with excess essential elements.
A: If excess of Nitrogen is supplied to a healthy plant, its Vegetative growth is more but reproductive growth is inhibited. It results in poor yield. Moderate increase in the concentration of micronutrients causes toxicity. Any mineral ion concentration in tissues that reduces dry weight of tissues by about 10% is considered toxic. Excess of one element may inhibit the uptake of another element. Excess of Manganese shows Brown spots in the leaf surrounded by chlorotic veins. Excess of Manganese competes with other micro elements (Fe, Ca and Mg) and inhibits their uptake. So symptoms of Mntoxicity also results in the deficiency symptoms of Fe, Ca and Mg.

Q: Explain the steps involved in the formation of rootnodule?
A: The following steps are observed in the formation of root nodule:
1) Bacteria are attracted by sugars, amino acids andflavonoids secreted by the roots of leguminous plants.

2) Legumes select compatible strains of Rhizobium by specific proteins called Lectins.

3) Bacteria multiply and secrete curling factor. Root hair shows curling which is called Shepherd’s crook.

4) Bacteria invade the root hair and produce cellulase, pectinase to digest the cell wall.

5) Bacteria breach the cell wall. Plasma membrane invagination forms infection thread and carries bacteria into cortical cell.

6) Cortical cells produce Auxins, multiply and root nodule is formed into which bacteria are released.

7) Bacteria also stimulate pericycle cells to divide.

8) The nodule develops vascular connection.

9) It consists Leghaemoglobin (Pink coloured), Nitrogenase. The bacterial cells in the nodule become spherical & called bacteroid.

 

Senior Inter Botany – Mineral Nutrition Four Mark important questions

Senior Inter Botany – Mineral Nutrition Four Mark important questions

Botany Mineral Nutrition Important Four Mark Questions– Senior Intermediate BIE

Botany Senior Intermediate Important questions on Mineral Nutrition have been characterized to help students to score more marks and gets more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on this segment as well.

Q: ‘All elements that are present in a plant need not be essential for its survival’. Justify.

A: Plants absorb 60 or even more mineral elements from the soil. All 60 are not present in one plant. In the same way all elements present in a plant are useful to it. Only the useful elements are called essential elements.

Q: Name at least five different deficiency symptoms in plants. Describe them, and correlate them with concerned mineral deficiency.

A: Deficiency symptoms of

1. Zinc:
1) Little leaf disease
2) Leaf rosette
3) Mottled leaf
4) Interveinal Chlorosis – Necrosis

Zinc is a mobile, micro mineral essential element. It is an activator for Carboxylase. It is needed for the synthesis of Auxins. It is absorbed in the form of Zn2+.

2. Copper:
1) Die back disease of shoots in Citrus
2) Necrosis of young leaf tips
3) Exanthema
4) Reclamation disease of cereals and legumes
5) Blackening Potato tubers

3. Boron:
1) Heart rot in beets (Brown heart)
2) Water core in turnip
3) Heart rot in carrot
4) Fibres in apple fruit
5) Death of root tip and stem tip

4. Molybdenum:
1) Whiptail disease in Cauliflower
2) Interveinal Chlorosis
3) Inhibition of flowering
4) Mottled Chlorosis
5) Upper half leaf shows withering

5. Chlorine:
1) Bronzing in legumes
2) Flower abseision
3) Swollen root tips

Q: Some angiospermic plants adapted to absorb molecular nitrogen from atmosphere. Explain, citing two examples.

A: Leguminaceae members and some plants like Myrica, Alnus, Casuarina have adapted to absorb molecular nitrogen with the help of bacteria. It occurs through symbiotic nitrogen fixation. Rhizobium fixes molecular nitrogen to Legumes, and also to a non-leguminous member called Parasponia. Filamentous, Actinomycetus bacteria like Frankia fixes atmospheric molecular nitrogen in Alnus, Casuarina and Myrica. Nostoc fixes nitrogen in the stem glands of Gunnera. Azospirillum, an associated symbiont fixes nitrogen in Maize, Sorghum, Wheat, Barley and Finger millets.

Chemistry Junior Inter Two mark important questions

Chemistry Junior Inter Two mark important questions

Chemistry Important Two Mark Important Questions– Junior Intermediate BIE

Botany Junior Intermediate Important questions on Environmental Chemistry have been characterized to help students to score more marks and gets more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on this segment as well.

Q: Define “COD”. How is it determined?

A: The amount of oxygen required to oxidise organic material present in polluted water. It is determined with acidified (50% H2SO4) K2Cr2O7.

Q: Define “Sink” and “Receptor”.

  • A: Sink: The medium which is not only effected by the pollutant but also remains there. Trees are sinks of CO2.
  • Receptor: The medium which is badly effected by the pollutant. Eyes are receptors during traffic jam.

Q: What is “Threshold Limit Value” (TLV)?

A: The permissible level of a toxic pollutant in atmosphere where a healthy person works in that atmosphere for 8 hours per day without any adverse effect.

Q: What is “green house effect”?

A: The phenomenon of gradual rise of temperature of earth due to absorption of infrared radiation of sun rays by the gases like CO2, CH4, CFCs and O3.

Q: Which oxides cause acid rains? What is its pH value?

A: Acid rains are caused by the oxides NO2 and SO2 (due to formation of H2SO4, HNO3) when they reacts with O2 & H2O. pH of acid rain water is below 5.6.

Q: Name two adverse effects caused by acid rains.

A: Decrease of fertility of soil as acid rains dissolve nutrients and washes away. Damage of historical monuments like Taj Mahal.

Q: What is “ozone hole”? Where was it first observed?

A: The depletion of ozone layer present in stratosphere is caused by CFCs. It was first observed over the south pole.

Q: What are the harmful effects caused by ozone layer depletion?

  • A: Causes skin cancer & cataract.
  • Damage to fish productivity.
  • Paints & fibres fade faster.
  • Decrease of moisture in soil.

Q: What is ‘Eutrophication’?

A: Drying of lake due to overgrowth & decay of algae and other plants & killing of fish (due to lack of oxygen) due to over nutrition of lake water.

Q: What is “Green Chemistry”?

A: New branch of Chemistry which helps in reduction in the production & use of harmful pollutants by using existing knowledge of Chemistry and other sciences.

Q: Explain the principle of Chromatography.

A: The technique in which the mixture of substances is applied on stationary phase (solid or liquid) and a mobile phase (gas or solvent) is allowed to move slowly over the stationary phase. The components are separated from one another in pure form.

Q: What is “Carcinogenicity”? Name two compounds cause it.

A: Cancer producing property by fused benzene rings (3 or more), which are formed due to incomplete combustion of tobacco, coal and petroleum.

Eg: 1, 2, – Benzpyrene, 1, 2 – Benzanthracene

Zoology Senior Inter Two Mark Important questions

Zoology Senior Inter Two Mark Important questions

Zoology Exam Two Mark Important Questions – Senior Intermediate BIE

Q: What is acromegaly? Name the hormone responsible for it.

  • A: a. Acromegaly is a disorder resulted due to hyper secretion of somatotropin (of pituitary). It is characterised by elongation of bones of jaw, limbs, thickened nose, lips, eye lids and wide finger tips (gorilla like appearance).
  • b. Somatotropin.

Q: Name the gland that increases in size during childhood and decreases in size during dulthood. What important role it play in case of infection?

  • A: a. Thymus gland
  • b. It secretes thymosins that are necessary for differentiation of T – lymphocytes, which provide cell mediated immunity in case of infections.

Q: Distinguish between diabetes mellitus and diabetes incipidus.

  • A: a. Diabetes mellitus is caused due to the deficiency of Insulin. It is characterised by loss of glucose through urine and formation of ketone bodies.
  • b. Diabetes incipidus is caused due to the deficiency of vasopressin. It is characterised by loss of more water through urine.

Q: What are androgens? Which cells secrete them?

  • A: a. Male sex hormones testosterone are called androgens.
  • b. Leydig cells of testes.

Q: Define immunity and immune system.

  • A: a. Ability of the body to resist or eliminate harmful foreign microbes and their products is known as immunity.
  • b. The network of organs, cells and proteins that protect the body from harmful microbes and their products is known as immune system.

Q: Colostrum is very much essential for new born infants. Justify.

  • A: a. Colostrum is the first milk produced from mother after child birth.
  • b. It contains antibodies like IgA which provide immunity to the new born.

Q: Explain the mechanism of vaccination or immunisation.

A: Vaccination is the process in which inactivated or weakened pathogens or antigenic proteins of the pathogen are inoculated into the body of the host. They initiate the production of appropriate antibodies in the host.

Q: What are autoimmune disorders? Give two examples..

A: In some cases, our own immune system fails to recognize some of our own body proteins and treats them as foreign antigens. Hence the immune system attacks on our own tissues. This leads to serious diseases called autoimmune disorders.

Q: Differentiate between perforins and granzymes.

  • A: a. Perforins are the enzymes (produced by cytotoxic T – cells) which form pores to the cell membranes of infected cells.
  • b. Granzymes are the enzymes (produced by cytotoxic T – cells) which enter the infected cells through the pores formed by perforins and activate certain proteins that destroy the infected cell.

Q: Which hormone is called anti diuretic hormone? Write the name of the gland that secretes it.

  • A: a. Vasopressin
  • b. Neurohypophysis of Pituitary.

Zoology Senior Inter Exam Important questions

Zoology Senior Inter Exam Important questions

Zoology Exam Important Questions – Senior Intermediate BIE

Botany Important questions on Zoology have been characterized to help students to score more marks and get more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on this segment as well.

Q: Write short notes on B-Cells.

A: B-Lymphocytes (B-Cells) are the cells that are capable of producing antibodies and capture the circulating antigens. BCells are produced from the stem cells in the bone marrow in adults and in foetus from the liver (from bursa fabricii in birds). Mature B-cells produce antibodies. As these antibodies take antigens, these Bcells are called immuno competent Bcells. Mature B- Cells enter the secondary lymphoid organs and thenbecomememory cells (long lived and store information about specific antigen for quick response) and plasma cells (produce antibodies).

Q: Write notes on Addison’s disease and Cushing’s Syndrome.

  • A: a. Due to hypo secretion of glucocorticoids by the adrenal cortex, Addison’s Disease is caused. It is characterised by loss of weight, muscular weakness, fatigue and low blood pressure. Sometimes bronzening of skin occurs.
  • b. Due to hyper secretion of glucocorticoids, Cushing’s Syndrome results. It is characterised by the breakdown of muscle proteins and redistribution of body fat resulting in spindly arms and legs besides moon face, buffalo hump. Wound healing is poor. Rapid weight gain may also occur.

Botany Junior Inter Four Mark Important questions on Taxonomy

Botany Junior Inter Four Mark Important questions on Taxonomy

Botany Four Mark Important Questions on Taxonomy – Junior Intermediate BIE

Botany Important questions on Taxonomy have been characterized to help students to score more marks and get more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on this segment as well.

Q: Describe the essential floral parts of plants belonging to Liliaceae.

A: Androecium and gynoecium are the essential floral parts. In Liliaceae the androecium and gynoecium show the following features:

  • Androecium: six stamens in two whorls of three each, free or epiphyllous (attached to tepals), anthers are dithecous, basifixed, introrse and show longitudinal dehiscence.
  • Gynoecium: Tricarpellary, syncarpous, ovary superior, trilocular with ovules on axile placentation. Style is terminal, stigma trifid or capitate.

Q: Write a brief account on the class of Dicotyledonae of Bentham and Hooker’s classification.

A: Bentham and Hooker divided flowering plants into three classes:

Dicotyledonae, Gymnospermae and Monocotyledonae

  • Dicotyledonae: The class dicotyledonae is divided into three subclasses based on thenumber of perianth whorls and their union. They are: Polypetalae, Gamopetalae and, Monochlamydae.

The sub class polypetalae is divided into three series:

  • Thalamiflorae with 6 cohorts (orders)
  • Disciflorae (with 4 cohorts)
  • Calyciflorae (5 cohorts)

The subclass gamopetalae is divided into three series:

  • Inferae (3 cohorts)
  • Heteromerae (3 cohorts) and
  • Bicarpellatae (4 cohorts)

The sub class monochlamydae is divided into 8 series (not divided into cohorts). Each cohort is further divided into natural orders (families). The dicotyledonae contains 165 natural orders.

Q: Give economic importance of plants belonging to Fabaceae.

A: Economic importance of Fabaceae: The plants are a good source of proteins (pulses).

Ex: Cajanus, Cicer

  • Pods of beans are used as vegetables. Ex: Phaseolus
  • Edible oil is obtained from soya bean and groundnut. Ex: Arachis
  • Timber is produced by rose wood. Ex: Dalbergia
  • Blue dye from Indigofera and yellow dye from Butea are obtained.
  • Derris is used in medicine.
  • Crotalaria, Phaseolus are used as fodder.
  • Sesbania and Tephrosia are used as green manure.

 

Botany Junior Inter Four Mark Important questions on Taxonomy of Angiosperms

Botany Junior Inter Four Mark Important questions on Taxonomy of Angiosperms

Botany Four Mark Important Questions on Taxonomy of Angiosperms – Junior Intermediate BIE

Botany Important questions on Angiosperms have been characterized to help students to score more marks and get more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on this segment as well.

Q: Write a brief note on semi technical description of a typical flowering plant.

A: Description of parts of a flowering plant is necessary for characterization, identification and classification of plants. Technical terms are used to describe the habit, habitat, vegetative characters (roots, stem and leaves) and floral characters like inflorescence, flower in general and detail, fruit, seed, pollination etc. A typical flowering plant is described using technical terminology as follows:

  • Habit: Herb/ Shrub/ Tree/ Climber etc.
  • Habitat: Mesophyte/ xerophytes/ hydrophyte etc.

Vegetative characters:

  • Root: Taproot/ Fibrous root/ Modifications if any.
  • Stem: Woody/ herbaceous/ climber/ creeper etc
  • Leaf: Radical/ cauline/ venation/ phyllotaxy

Floral characters:

  • Inflorescence: Position and type
  • Flower: general description like presence or absence of bracts, bracteoles etc, merosity, sexuality, symmetry and type based on position of the ovary.
  • Calyx: No. of sepals, union, aestivation.
  • Corolla: No. of petals, union, aestivation etc.
  • Androecium: No. of stamens, their union, anthers etc.
  • Gynoecium: No. and union of carpels, No. of locules, position of ovary, placentation etc.
  • Pollination: Self or cross pollination, contrivances and mechanisms.
  • Fruit: type
  • Seed: Dicot or monocot, endospermic or non-endospermic.

Q: Describe the non-essential floral parts of plants belonging to Fabaceae.

A: Calyx and corolla are the non-essential floral parts. In Fabaceae the calyx and corolla show the following features:

  • Calyx: Sepals five, gamosepalous (united), valvate or imbricate aestivation, odd sepal anterior.
  • Corolla: Five petals, polypetalous (free), papilionaceous corolla with one large standard petal, two lateral wing petals and two anterior fused petals called keel petals. The keel petals enclose essential organs. The odd petal is posterior. Vexillary or descendingly imbricate aestivation.

Q: Give an account of floral diagram.

A: Floral diagram and floral formula are used to describe the flower precisely. Floral diagram gives information about the number of parts of a flower, their arrangement and interrelationships with one another. The axis represents the posterior side and indicated as a dot or circle on the top of the floral diagram. The bract represents the anterior side and indicated at the bottom of the floral diagram. If bracteoles are present they are indicated beside the bract. The four whorls of a flower calyx, corolla, androecium and gynoecium are indicated as successive whorls from outside to inside. The outermost whorl is the calyx and the innermost whorl represents gynoecium. Floral formula is usually written below the floral diagram to describe the flower with symbols and numbers.

Botany Junior Inter important questions on Angiosperms

Botany Junior Inter important questions on Angiosperms

Botany Important Questions on Angiosperms – Junior Intermediate BIE

Botany Important questions on Angiosperms have been characterized to help students to score more marks and get more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on this segment as well.

Q: What is ‘Omega Taxonomy’?

A: The taxonomy which uses information from other sources like embryology, cytology, palynology, phyto chemistry, serology etc. along with morphological features is known as ‘Omega Taxonomy’.

Q: What is natural system of plant classification? Name the scientists who followed it.

A: The system of classification that considers all possible morphological characters and their natural relationships is called natural system of classification.

Bentham and Hooker followed this system.

Q: Explain the scope and significance of Numerical taxonomy.

A: Numerical taxonomy can be used to evaluate differences and similarities between taxonomic groups using mathematics and computers. As this method uses numbers and codes it is easy and quick process and can be used for hundreds of characters at a time.

Q: What is geocarpy? Name the plant which exhibits this phenomenon.

A: Production of fruit inside the soil is called geocarpy. Arachis hypogea (groundnut).

Q: Name the type of pollination mechanism found in members of Fabaceae.

A: Piston mechanism.

Q: Give the technical description of anthers of Allium cepa.

A: Anthers of Allium cepa are dithecous, basifixed, introrse and show longitudinal dehiscence.

Q: Give the technical description of ovary of Solanum nigrum. (2 Marks)

A: The ovary of Solanum nigrum is bi or unilocular, superior ovary with many ovules on axile placenta. The carpels are arranged obliquely at 45°. Style is terminal and stigma capitate.

Botany Junior Inter two marks important questions

Botany Junior Inter two marks important questions

Botany Two Marks Important Questions – Junior Intermediate BIE

Two Marks Botany Important questions from chapters 6 and 7 have been characterized to help students to score more marks and get more flexibility to have complete knowledge on the subject. Students can go through these questions and answers as well to score complete marks on these segment as well.

Q: What is self-incompatibility?

A: The inability of pollen to germinate on the stigma of the same flower is called self-incompatibility or self-sterility. (Ex: Abutilon)

Q: Which is the triploid tissue in a fertilized ovule? How is the triploid condition achieved?

A: Endosperm.

Triploid condition is achieved by fertilization of second male gamete with two polarnuclei of central cell to form a primary endosperm nucleus. The primary endosperm nucleus (PEN) divides and forms endosperm in fertilized ovule (seed).

Q: What is the function of two male gametes produced by each pollen grain in angiosperms?

A: The first male gamete fuses with the female egg cell to form a zygote (fertilization or syngamy). The second male gamete fuses with the diploid secondary nucleus (triple fusion) to form PEN (Primary endosperm nucleus) which gives rise to endosperm.

Q: Name the parts of an angiosperm flower in which development of male and female gametophyte take place.

A: Male gametophyte – pollen grain.

Female gametophyte (embryo sac) – nucellus of the ovule.

Q: Mention two strategies evolved to prevent self-pollination in flowers.

A: Dichogamy Herkogamy

Q: Why do you think the zygote is dormant for some time in a fertilized ovule?

A: Zygote is dependent for its nourishment on the endosperm to form an embryo.

Hence it is dormant for some time until some endosperm is formed.

Q: What is meant by scutellum? In which type of seeds it is present?

A: The cotyledon of a monocot embryo is called scutellum. It is present in monocot seeds (Ex: Grasses.)

Q: Define with examples endospermic and non-endospermic seeds.

A: Endospermic seeds – castor and coconut

Non endospermic seeds – groundnut, beans and peas.

 

CGBSE Inter Vocational Exam Time Table March 2016 (https://web.cgbse.net)

CGBSE Inter Vocational Exam Time Table March 2016 (https://web.cgbse.net)

12th Class Vocational Exam Time Table 2016 – Chhattisgarh Board of Secondary Education

Exam Time Table for Intermediate/10+2/12th Class Vocational Examination 2016 has been released by Chhattisgarh Board of Secondary Education. All the candidates who want to apply for these examinations which are going to be conducted in the month of Feb/March 2016 can visit official website or click on the links mentioned below.

Inter Time Table – https://web.cgbse.net/2015/TimeTable-Exam2016/XII-Vocational.pdf

Official Website – https://web.cgbse.net

Inter Vocational Time Table Dates:

  • February 23rd –  Environment
  • February 25th –  First Language
  • February 27th – Second Language
  • March 01st – Vocational Course – I
  • March 03rd – Vocational Course – II
  • March 05th – Vocational Course – III
  • March 08th – Foundation course

Board/Institute – CGBSE Board – Vocational

Course – Intermediate/10+2/12th – Vocational

Examination – CGBSE Board Vocational

Zone – Chhattisgarh

Hall Tickets Download/Dispatch – January/Feb 2016

Exam Date – February 23rd, 2016 to March 14th, 2016

Exam Time – 09:15 am to 12:15 pm

Results – April/May 2016

Candidates can download complete time table from official website of the CGBSE.