Question 1.
Pollen grains remain preserved as fossil due to the presence of :
Question 2.
In which of the following sets of families, the pollen grain are viable for months?
Question 3.
In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
Question 4.
Pollen grains can be stored for several years in liquid nitrogen having a temperature of:
Question 5.
Which of the following has proved helpful in preserving pollens as fossils?
Question 6.
Proximal end of the filament of stamen is attached to the?
| 1. | connective | 2. | placenta |
| 3. | thalamus or petal | 4. | anther |
Question 7.
Which one of the following statements is not true?
| 1. | Exine of pollen grains is made up of sporopollenin |
| 2. | Pollen grains of many species cause severe allergies |
| 3. | Stored pollen in liquid nitrogen can be used in crop breeding programs |
| 4. | Tapetum helps in the dehiscence of anther |
Question 8.
In angiosperms, microsporogenesis and megasporogenesis?
Question 9.
Male gametophyte in angiosperms produces?
Question 10.
Which one of the following statements is not true?
Great Job! continue working on more practice questions?
Question 1.
Which one of the following statements is correct?
Question 2.
Which one of the following statements is wrong?
Question 3.
Which one of the following is resistant to enzyme action?
Question 4.
In a flowering plant, archesporium gives rise to:
Question 5.
In grasses what happens in microspore mother cell for the formation of mature pollen grains:
Attempt Now
