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The cells of which of the following layers of the anther wall are multinucleated due to endomitosis?
The tapetum is a specialised layer of nutritive cells found within the sporangium, particularly within the anther, of flowering plants, where it is located between the sporangenous tissue and the anther wall. The cells are polyploidy.
A typical angiosperm anther is dithecous which means that it is:
Read page 21, XII NCERT
Which of the following layers in the wall of an anther nourishes the developing pollen grains?
Read page 21, XII NCERT
The pistil of Papaver is:
Read page 25, Figure 2.7, XII NCERT
The only type of pollination that brings genetically different types of pollen grains to the stigma is:
Read page 28, XII NCERT
The aquatic plant in which pollination is not carried out by water is:
Read page 29, XII NCERT
Dioecy in plants prevents:
Read page 31, XII NCERT
The central cell in the embryo sac, after triple fusion, becomes:
Read page 34, XII NCERT
Epicotyl has a shoot apex and a few leaf primordial enclosed in a hollow foliar structure called as the:
Read page 36, XII NCERT
The micropyle remains as a small pore in the seed coat. During germination, this facilitates entry of:
I. Oxygen
II. Water
Read page 36, XII NCERT
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