Which is the longest phase of the cell cycle

• M-phase

• interphase

• Leptotene

• S-phase

Which of the given genera is homosporous

• Cycas

• Pinus

• Selaginella

• Lycopodium

Which of the following are a group of micronutrients for plants

• Fe, Mn, Cu, Mo, Zn

• Fe, Mn, Cu, O, C

• Cu, B, Cl, Fe, Ca

• Ca, Mg, Fe

Match Column- I with Column - 2 and choose the correct option from below.

Column - I	Column - II
A. Marginal placentation	(i) Sunflower
B. Axile placentation	(ii) Mustard
C. Parietal placentation	(iii) Lemon
D. Basal placentation	(iv) Pea

• A-(iv), B - (iii), C- (ii), D- (i)

• A -(iv), B- (iii), C- (i), D - (ii)

• A-(iv), B-(i), C- (ii), D - (iii)

• A - (iii), B- (iv), C- (ii), D - (i)

Vernalisation is subjected to plants growing in

• tropical areas

• sub tropical areas

• temperate areas

• hot areas/arctic region.

The phenomenon that operates in the formation of root or shoot in a callus culture is

• differentiation

• re-differentiation

• de-differentiation

• re-juvenation

Which of the following genes do not occur naturally in living organisms

• Bt genes

• RNAi genes

• Cry genes

• Endogeneous cytoplasmic defence genes

8.

DNA and RNA comprise of

• sugar, phosphate, base

• sugar, phosphate

• base, phosphate

• sugar, base

Choose the correct pair

• Coconut, cucurbits - dioecious

• Honeybee, Rotifers - parthenogenesis

• Ornithorhyncus, Whale - viviparity

• Frog, Peacock - external fertilisation

Select the incorrect statement.

• Periplaneta has compound eyes.

• Earthworm shows segmentation.

• Ascaris shows sexual dimorphism.

• Liver fluke has a complete alimentary canal