Embryo sacs of some apomictic species appear normal but contain diploid cells. Suggest a suitable explanation for this condition.

ASSERTION TYPE QUESTIONS : These questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is correct explanation of Assertion. B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. .Assertion : 7-celled, 8- nucleate and monosporic embryo sac is called Polygonum type of embryo sac. Reason : It was discovered by Hofmeister for the first time in Polygonum.

ASSERTION TYPE QUESTIONS : These questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is correct explanation of Assertion. B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. . Assertion : If an endosperm cell of angiosperm contains 24 chromosomes, the number of chromosomes in each cell of rootwill be 16. Reason : As endosperm is triploid and root cells are diploid, the chromosome number in each of root cell will be 16.

SUGGESTED ACTIVITIES – CURIOSITIES TO ANSWER Study pollen germination by dusting some pollen from flowers like Pea, Chick pea, Crotalaria, Balsam and Vinca on a glass slide containing a drop of 10% sugar solution. Examine the appearing pollen tubes under low power of microscope.