48.

49.

50.

51.

52.

53.

064/23

Which of the following is not a member of electron transport chain of mitochondria ?
A) Cytochrome—a_ 3) Cytochrome — bg C) Cytochrome-c ட) UQ

A dihybrid ratio that denotes supplementary gene interaction is
A) 9:3:3:1 B) 9:7
C) 13:3 D) None of the above

Which of the following is common for both aerobic and anaerobic respiration ?
A) Kreb’s cycle B) Glycolysis
C) Fermentation D) None of the above

Length of rotation of forest crops depends upon
i. Rate of growth
ii. Silvicultural characteristics of the species
iii. Economic considerations
iv. Social conditions
A) iand iv B) i and ii
C) All the above D) None of the above

The objective of the preparation of commercial volume table for the forest trees of
Kerala.

i. To replace the practice of estimation of yield of timber and firewood based
on occular estimate, application of arbitary conversion factors etc. by a more
reliable method.

ii. Estimation of commercial volume for 31 species.
iii. Prepared by N. R. Nair, 1971.

iv. Based on regression equation, V = a + bD + cD? (V— Vol. in Cu.M and
D — diameter at breast height in meter).

A) ionly B) i and iii
C) iii and iv D) All the above

Which among the following statements about bats are true ?

A) Bats may play a key role in the maintenance of some cave ecosystems by
bringing in an outside energy source to energy-poor, lightless caves

B) Bats are the only true flying mammals on earth
C) One in five mammal species is a bat
D) All the above