Plant Anatomy And Physiology - Study Mode
[#241] Consider the following statements and choose the correct answer: 1. For the development of viable seeds the double fertilization is very necessary 2. The net result of double fertilization is the formation of endosperm from the triploid nucleus 3. In Angiosperms very free nuclear divisions take place as in Gymnosperms 4. The endosperm nucleus has both maternal and paternal characters showing physiological importance like hybrid vigour
Correct Answer
(D) Only 1, 2 and 4 are true
[#242] Organisms, both resting and swimming types, that are confined to the water surface are known as
Correct Answer
(B) Neustons
[#243] According to Hutchinson, the totality of biotic and abiotic factors to which a given species is uniquely adapted is known as
Correct Answer
(C) Ecological niche
[#244] Of the elements of the flora of India, which of the following is dominant?
Correct Answer
(A) Malayan
[#245] The process of occupation of a particular area by different plant communities from their birth to maturity is known as
Correct Answer
(B) Plant succession