Plant Anatomy And Physiology - Study Mode
[#216] Plants contain a variety of sterols like stigmasterol, ergosterol, sitosterol etc which very closely resemble cholesterol. These plant sterols are referred as
Correct Answer
(A) Phytosterols
[#217] Assertion (A) Reproduction is the process by which living organisms produce young ones of their species. Reason (R) Sex organs, male and female, are mandatory for reproduction.
Correct Answer
(C) A is true, but R is false
[#218] Which of the following pair represent the Correct pair of reproductive parts of a flower?
Correct Answer
(C) Stamens and Carpels
[#219] Consider the following statements regarding double fertilization and choose the correct answer: 1. At the time of the sperm's approach to the egg nucleus, the male nucleus has the appearance of a continuous thread rolled into a ball 2. It is only the presence of the two nucleoli which serves to distinguish the fertilized egg from the unfertilized egg 3. Finally, the male nucleolus increases in size and fuses with the female nucleolus thus closing the phenomenon of sexual union of the nuclei 4. The fusion of the male gamete with the secondary nucleus results in the formation of a sister embryo
Correct Answer
(A) Only 1, 2 and 3 are true
[#220] Consider the following statements and choose the correct answer: 1. Evaporation is a vital physiological process 2. Transpiration is restricted to living bodies only 3. Evaporation is as low loss of water molecules to the unsaturated atmosphere from the free exposed surface among living and non-living bodies 4. Transpiration is simply a loss of water molecules which do not involve any pressure
Correct Answer
(D) 2 and 3 are true