Home
Class 12
BIOLOGY
Assertion : In a microsporangium, the ta...

Assertion : In a microsporangium, the tapetal cells possess little cytoplasm and generally have a single prominent nucleus.
Reason : During microsporogenesis, the microspore mother cells (M M Cs) undergo mitotic divisions to produce hapliod microspore tetrads.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
d
Tapetum is the innermost wall layer of a microsporangium. It nourishes the developing pollen grains. The tapetal cells enlarge radically and become filled with dense protoplasmic contents as well as nutrients. Tapetal cells are generally multinucleate or their nucleus become polyploid due to endoplodiy. Microsporogenesis refers to the process of formation of haploid microspores mother cell (M MC) or pollen mother cell (PMC) through meiosis (and not mitosis).
Promotional Banner

Similar Questions

Explore conceptually related problems

Identify the statements as correct or incorrect with explanations for your answer (i) FSH acts on the Leydig cells and stimulates synthesis and secretion of androgens. (ii) The increased level of GnRH acts on the anterior pituitary and stimulates the secretion of gonadotropins, i.e. LH and FSH. (iii) The fully grown primary oocyte completes mitotic division producing two daughter nuclei, i.e. secondary oocyte and first polar body. (iv) Ovum is a rounded, motile cell having abundant cytoplasm called ooplasm and a large nucleus termed as germinal vesicle.