A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. The unit of female reproductive body in flower is
A. Carpel
B. Megasporangium
C. Ovule
D. Ovary
2. During the formation of ATP fromADP, which is released
A. Water
B. Oxygen
C. Both Aand B
D. Energy
3. Lipids
A. Diglyceraldehydes, Monoglyceraldehydes (B)Dinucleotides, Mononucleotides
B. Dipeptide, Peptieds
C. Fatty acids, Aminao acids
D. None of these
4. Two organisms of same class but different families will be kept under the same
A. genera
B. species
C. order
D. family
5. The characteristic odour of garlic is due to :
A. a chloro compound
B. a sulphur compound
C. a fluorine compound
D. acetic acid
6. Which metalis the main air pollutant in metro cities?
A. Lead
B. Copper
C. Magnesium
D. Iron
7. In stem,the xylemshows
A. Tetracharrangement
B. Endarchdevelopment
C. Polyarch arrangement
D. Exarch development
8. In the sieve elements which one of the following is the most likely function of p-proteins?
A. Deposition ofcallose on sieve plates
B. Providing energyfor active translocation
C. Autostylic enerymes
D. Sealingmechanism on wounding
9. Body temperature is regulated by the
A. pons
B. medulla
C. thalamus
D. hypothalamus
10. An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as
A. interferons and histones
B. histamme and kinins
C. histamine and dopamine
D. interferons and opsonin
11. Which is the product of aerobic respiration?
A. Malic acid
B. Ethylalcohol
C. Lactic acid
D. Pyruvic acid
12. Net gain of glycolysis is
A. 3 ATP and 1 NADH + H+
B. 2 ATP and 2 NADH + H+
C. 6 ATP and 4 NADH + H+
D. 10 ATP and 6 NADH + H+
13. For chlorophyll formation most important minerals are
A. Fe++ and Ca++
B. Fe++ and Mg++
C. Mg++ and Ca++
D. all the above
14. Which is to be used in production of swiss cheese ?
A. Monoscus Purpureus
B. Clostridium bacterium
C. Lacto Bacillus
D. Saecharhomyces Cerrevisiae
15. In which method of asexual reproduction the division of cytoplasm is not possible ?
A. Amitotic division
B. Binary fission
C. Division
D. Budding
16. During transport of CO2 blood does not become acidic due to
A. Neutralisation of H2CO3 by Na2CO3
B. Absorption by leucocytes
C. Blood buffers
D. Non accumulation
17. Which of the following is most important for the growth of children up to the age of 14
A. protein
B. vitamins
C. fat
D. milk
18. Which of the following cells are without cytoplasm and ncleus?
A. Guard cells
B. Stone cells
C. Companion cells
D. Sieve cells
19. Which is not a stem modification?
A. Rhizome of Ginger
B. Corm of Colocasia
C. Pitcher of Nepenthes
D. tuber of potato
20. Thefunctionof the filiform apparatus is
A. To nourish the pollen grain
B. To guide the entryof pollen tube
C. To develop pollen tube
D. To carrypollen tube through style
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