Go through the following statements:
The above contrivances favour:
(a) Self pollination (b) Anemophily
(c) Ornithophily (d) Entemophily
Find out the correct option:
(a) Among animals, insects, particularly bees are the dominant biotic pollinating agents
(b) Often flowers of animal- pollinated plants are specially adapted for particular species of animals
(c) In some species floral rewards like edible nectar, pollen grains, shelter for egg laying are given to pollinating animals
(d) All the above are correct
Which of the above characters favour entomophily?
(a) II, IV, V (b) I, II, III, VI (c) III, IV, V (d) I, IV, V, VI
What is the genetic importance of outcrossing?
(a) Outcrossing is a characteristic of pollinators
(b) Outcrossing increases genetic diversity in a population
(c) Outcrossing increases the chances of sterility
(d) Outcrossing promotes inbreeding in a population
(a) All are correct (b) All are wrong
(c) Only I, II, III are correct (d) IV and V are wrong
Which of the following options is correct?
(a) Pollination gives the guarantee of the promotion of post-pollination events that lead to fertilization
(b) The events – “from pollen deposition on stigma until pollen tubes enter the ovule" are together referred to as pollen-pistil interaction
(c) Pollen-pistil interaction is a dynamic process involving pollen recognition followed by only promotion (not rejection) of the pollen
(d) Pistil has no ability to recognize the pollen, whether right or wrong type
In double fertilization total number of male nuclei and total number of female nuclei involved are:
(a) 3, 2 respectively (b) 2, 3 respectively
(c) 2, 2 respectively (d) 3, 3 respectively
A homogamous tall pistillate plant (TT) is crossed with homogamous dwarf staminate plant (tt). What is the genotype of endosperm?
(a) TTT (b) TTt (c) Ttt (d) ttt
For artificial hybridisation experiment in bisexual flower, which of the sequences is correct?
(a) Bagging → Emasculation → Cross pollination → Rebagging
(b) Emasculation → Bagging → Cross pollination → Rebagging
(c) Cross pollination → Bagging → Emasculation → Rebagging
(d) Self-pollination → Bagging → Emasculation → Rebagging
Which of the following is false?
(a) I and II only (b) III only (c) V only (d) II only