Multiple Choice QuestionsWhich 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.
C.
temperate areas
Vernalization is the induction of a plant's flowering process by exposure to the prolonged cold of winter, or by an artificial equivalent. After vernalization, plants have acquired the ability to flower, but they may require additional seasonal cues or weeks of growth before they will actually flower.
Many temperate plants have vernalisation requirement and must experience a period of low temperature in winter, to initiate or accelerate flowering process, or in many fruit tree species, to induce dormancy and then break dormancy prior to flowering.
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
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
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