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17551.

Question :Give the names of any one glucocorticoid and one mineralocorticoid.

Answer»

SOLUTION : Glucocorticoid—Cortisol, Mineralocorticoid—aldosterone.
Discussion
17552.

Question : Give the names, locations and functions of the various sphincter muscles associated with the digestive systems.

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Discussion
17553.

Question : Give the name of two helminths, which causes ascariasis and filariasis respectively.

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ASCARIS and Wuchereria
Wucheriria and Ascaris
Roundworm and Flatform
Plasmodium and Wuchereria

Answer :A
Discussion
17554.

Question : Give the name of one non-symbiotic nitrogen fixing prokaryote.

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SOLUTION :AZOTOBACTER
Discussion
17555.

Question : Give the name of first vertebra

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ANSWER :FEMUR
Discussion
17556.

Question : Give the name of an insectivorous angiosperm plant.

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SOLUTION :NEPENTHES (Pithcher PLANT)
Discussion
17557.

Question : Give the most fundamental concept of cell biology.

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SOLUTION :CELL PRINCIPLE
Discussion
17558.

Question : Give the main difference between the Danielli and Davson model and Robertson model of molecular structure of cell membrane.

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SOLUTION :PROTEIN molecules are throught to be GLOBULAR in Danielli-Davson MODEL and extended in Robertson model.
Discussion
17559.

Question : Give the main function of the centrioles.

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SOLUTION :HELP ORGANISE SPINDLE in CELL diviison.
Discussion
17560.

Question : Give the meaningfor the followingterminologies : (a) Decarboxylation(b) Phosphorylaiton(c) Photolysis.

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Solution :(a) Decarboxylation: Removalof `CO_(2)`from a molecules .
(b) PHOSPHORYLATION: Synthesis of ATP by theadditionof inogranicphosphate to ADP.
(C) Photolysis : Splittingof watermolecules using LIGHTENERGY .
Discussion
17561.

Question : Give the main drawbacks of lamellar models of cells membrane.

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SOLUTION :Do not explain (i) the PASSAGE of water and water soluble materials and (ii) ACTIVE transport through cell membrane.
Discussion
17562.

Question :Give the location of oxysomes.

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SOLUTION :Knob-like structures PRESENT on INNER face of inner MITOCHONDRIAL membrane
Discussion
17563.

Question : Give the location of glycolysis.

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SOLUTION :CYTOPLASM
Discussion
17564.

Question : Give the location of hepatic caeca in a cockroach. What is their function?

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Solution : A ring of 5-8 blind tubules CALLED hepatic caeca are PRESENT at the JUNCTION of FOREGUT and midgut. Hepatic caeca secrete digestive juices.
Discussion
17565.

Question : Give the location of hepatic caeca in a cockroach. What is their function ?

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Solution :Caecum or HEPATIC collum are 6-8 narrow, hollow and closed tubules. They are present at the connection of foregut and MIDGUT. Caecum are like liver of invertebrates. They secrete DIGESTIVE juices and HELP in DIGESTION.
Discussion
17566.

Question : Give the location of casparian strip and explain its role in the water movement.

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Solution :CASPARIAN strip is seen in endodermis of root.

These walls are impermeable for transport of WATER. Because it contains suberin. So water REACHES to XYLEM through symplast PATHWAY from the wall.
Discussion
17567.

Question : Give the location of clitellum and spermathecal openings in Lampito mauritii.

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SOLUTION :In mature earthworms,` 14-17^(h)` segments are swollen with a glandular THICKENING of the SKIN CALLED the clitellum. Permathecal openings are three pairs of SMALL ventrolateral apertures lying intersegmentally between the grooves of the segment 6/7, 7/8 and 8/9.
Discussion
17568.

Question : Give the location of enzymes of TCA - cycle.

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SOLUTION :Mitochondral - MATRIC
Discussion
17569.

Question : Give the location of a ball and socket joint in a human body.

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Solution :Ball and socket joints is present between Humerus bone and glenoid CAVITY of scapula of pectoral girdle such joints allows movement of BONES in all DIRECTIONS e.g. SHOULDER joint, pelvic joints.
Discussion
17570.

Question : Give the information, regarding structure of lipids.

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Solution :Lipids are generally water soluble They could be simple fatty acids.
A fatty acid has a carboxyl group attached to an R group.
The R group could be a methyl `(-CH_3)`, or ethyl `(-C_2H_5)` or higher number of `-CH_2` groups (1 CARBON to 19 carbons). For example, palmitic acid has 16 carbons including carboxyl carbon. Arachidonic acid has 20 carbon ATOMS including the carboxyl carbon.
Fatty acids could be saturated (without double bond) or unsaturated (with one or more C = C double bonds).
Another simple lipid is glycerol which is trihydroxy propane.
MANY lipids have both glycerol and fatty acids. Here the fatty acids are esterified with glycerol. They can be then monoglycerides, diglycerides and triglycerides. These are also called FATS and oils based on melting point.
Oils have lower melting point (e.g., gingely oil) and hence remain as oil in winters.
Some lipids have phosphorous and a phosphorylated organic compound in them. These are phospholipids. They are found in cell membrane. Lecithin is one example. Some tissues especially the neural tissues have lipids with more complex structures.

Discussion
17571.

Question : Give the function of lenticels.

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SOLUTION :PERMIT EXCHANGE of GASES.
Discussion
17572.

Question : Give the function of companion cells.

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SOLUTION :MAINTAIN pressure gradient in SIEVE TUBES.
Discussion
17573.

Question : Give the full form of MAB.

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SOLUTION :MAN and BIOSPHERE PROGRAMME.
Discussion
17574.

Question : Give the function of chordae tendinae.

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Solution :These check the projection of Auriculo-ventricular VALVES into the AURICLES, so check the back FLOW of BLOOD.
Discussion
17575.

Question : Give the full form of IUCN.

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Solution :INTERNATIONAL UNION for Conservation of NATURE and Natural Resources.
Discussion
17576.

Question : Give the floral characters of Clitoria ternatea.

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SOLUTION : Flower: Bracteate, bracteolate, bracteoles usually large, PEDICELLATE, heterochlamydeous, COMPLETE, BISEXUAL, pentamerous, zygomorphic and hypogynous.
Discussion
17577.

Question : Give the exact location and function of passage cells.

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Solution :In roots, some CELLS of the endodermis, usually the ones opposite to protoxylem, remain thin WALLED. These cells are called PASSAGE cells. They help in radial DIFFUSION of WATER.
Discussion
17578.

Question : Give the economic importance of Silkworm.

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Solution : 1. Rearing of silkworm on a commercial scale is called sericulture.
2. It is an agro-based industry comprising of
- cultivation of food plants for the silkworms.
- rearing of silkworms.
- reeling and spinning of silk.
3. Silk fibres are utilized in preparing silk clothes.
4. Silk is used in industries and for military PURPOSES.
5. Silk is used in the manufacture of fishing fibres, parachutes, cartridge BAGS, insulation coils for telephone, WIRELESS receivers, tyres of racing cars, FILTER fibres, in medical dressings and as suture materials.
Discussion
17579.

Question : Give the economic importance of lac insect.

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Solution :ECONOMIC importance of Lac
a. Lac is largely used as a sealing wax and adhesive for optical instruments. It is used in ELECTRIC industry, as it is a good INSULATOR.
b. It is used in preparations of shoe and leather polishes and as a protective COATING of wood.
C. It is used in laminating paper board, photographs, engraved materials and plastic moulded articles.
d. Used as a filling material for gold ornaments.
Discussion
17580.

Question : Give the economic importance of prawn fishery.

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Solution :The flesh of PRAWN is palatable and RICH in glycogen, protein with LOW fat CONTENT.
Discussion
17581.

Question :Give the dental formula of human beings.

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Solution :ADULT `: I 2/2, c1/1 , p m 2/2 ,m 3/3= 32`
HUMAN baby: `I 2/2,C 1/1, p m 0/0 ,m 2/2=20`
Discussion
17582.

Question : Give the dental formula of human beings.

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SOLUTION :i(2/2),C(1/1),PM(2/2),`m(3/3xx32(2123//2123=32)`
Discussion
17583.

Question : Give the defination for growth

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SOLUTION :Growth is defined as an irreversible PERMANENT increase in size, shape, NUMBER, volume and dry WEIGHT.
Discussion
17584.

Question : Give the conclusionof HillsReactions.

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SOLUTION :Conclusion of Hill's Reaction .
1. Duringphotosynthesisoxgyenis evolvedform water .
2. Electrons for THEREDUCTION of `CO_(2)`are obtainedfrom water .
3. REDUCED substanceproduced , laterhelps to reduce`CO_(2)`
`2H_(2) O + 2A to2 AH_(2) + O_(2)`
Discussion
17585.

Question : Give the common terms for pinocytoiss, phagocytoiss and axocytoiss.

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SOLUTION :CELL DRINKING, cell EATING, cell VOMITING
Discussion
17586.

Question : Give the common names of the following animals : Periplanata americana

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SOLUTION :COCKROACH
Discussion
17587.

Question : Give the common name of Periplaneta americana.

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SOLUTION :AMERICAN COCKROACH.
Discussion
17588.

Question : Give the common name of periplanata americana.

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SOLUTION :COCKROACH
Discussion
17589.

Question : Give the chemical nature of ribosomes.

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SOLUTION :RRNAS and PROTEINS
Discussion
17590.

Question : Give the characteristic features of the following citing one example of each (a) Chondrichthyes and Osteichthyes (b) Urochordata and Cephalochordata

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SOLUTION :
Discussion
17591.

Question : Give the botanical name of any five plants of the family Solanaceae with which you are familiar.

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Solution : (i) Solanum tuberosum (potato), (II) Lycopersicon esculentum (tomato), (iii) CAPSICUM annuum (red PEPPER), (iv) ATROPA belladonna (belladonna),(V) Nicotiana tabacum (tobacco).
Discussion
17592.

Question : Give the basis of which phylum coelenterata has been sub-divided.

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SOLUTION :On the BASIS of DEVELOPMENT of ZOOIDS
Discussion
17593.

Question : Give suitable explanation for thefollowing: Grapes shrink when immersed in a verystrong sugar solution.

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Solution :Very strong sugar solution is hypertonicto the cell SAP present inside the GRAPES. THEREFORE, water comes out of grapes due to exosmosis. It results in SHRINKING of THEGRAPES.
Discussion
17594.

Question : Give some examples of taxa at different hierarchial levels.

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Solution :KINGDOM, Phylum, CLASS, ORDER, Family, Genus and SPECIES.
Discussion
17595.

Question : Give significance of osomosis.

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SOLUTION :Osmosis helps in absorption of water by the roots, opening and closing of stomata, turgor movements of LEAFLETS in MIMOSA, SEED GERMINATION, etc.,
Discussion
17596.

Question : Give scientific term for determination of the age of a tree bycounting the number of annual rings.

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SOLUTION :DENDROCHRONOLOGY
Discussion
17597.

Question : Give scientific reasons : Zoological parks fulfil to achieve many objectives.

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Solution :Different types of ANIMALS are inhabitated in Zoological park.
Care is taken to MAINTAIN their life habits and nutritional habits.
They are INDUCED to breed and their hybridization is carried out.
The park conducts various training programme at school and COLLEGE levels to educate public about BIODIVERSITY
Discussion
17598.

Question : Give scientific reasons : There is a need to standardize the name of living organisms.

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Solution :There are millions of living organisms in the world.
Often, these organisms are known by their local names that vary from PLACE, EVEN WITHIN a country.
Hence, the naming process of living ORGANISM is standardized in a way that a particular organism is known by the same NAME all over the world.
Discussion
17599.

Question : Give scientific reasons : The phylogenetic relationship is useful as a criterion for classification.

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SOLUTION :PHYLOGENY is the evolutionary history of an organism. It shows the true kind of relationship in organism. This relationship are not clear in all cases. We can get some information from fossil record but it is not ENOUGH. HENCE the phylogenetic relationships are ascertained from morphology, CYTOLOGY, genetics, physiology and biochemistry for correct classification of the organisms.
Discussion
17600.

Question : Give scientific reasons : The blood vascular system of leeches is also called haemocoelomic system.

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Solution :In LEECHES there is no true BLOOD vascular system has coelomic space and fluid have been modified to form the circulatory system. Hence it is called haemocoelomic system and the coelomic fluid is called haemocoelomic fluid. Blood is red due to the presence of respiratory PIGMENT haemoglobin or erythrocruorin found dissolved in PLASMA. Tree amoeboid blood CORPUSCLES are present but there are no red blood corpuscles.
Discussion