Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Sexual Reproduction in Flowering Plants

Question:

Read the passage and answer the following questions:
A typical microsporangium, when observed in a transverse section, has a nearly circular shape. It is typically surrounded by four layers of walls: the epidermis, endothecium, middle layers, and the tapetum. The outer three wall layers serve to protect the microsporangium and aid in the anther's opening to release the pollen. The innermost wall layer, known as the tapetum, provides nourishment to the developing pollen grains. Tapetum cells are characterized by their dense cytoplasm and often contain multiple nuclei. In angiosperms, an anther usually consists of two lobes, each with two theca, making it dithecous. The theca are often separated by a longitudinal groove. The anther itself has a tetragonal shape with four microsporangia situated at its corners, two in each lobe. These microsporangia undergo further development and transform into pollen sacs.

 

What are sporogenous tissue?

Options:

Loosely arranged haploid homogenous cells.

Compactly arranged diploid heterogenous cells.

Compactly arranged haploid homogenous cells.

Compactly arranged diploid homogenous cells.

Correct Answer:

Compactly arranged diploid homogenous cells.

Explanation:

The correct answer is Option (4) -Compactly arranged diploid homogenous cells.

Sporogenous tissue refers to a specific type of tissue found in plants, particularly in the anther of the flower. It consists of compactly arranged diploid cells that have the potential to undergo meiosis and give rise to haploid spores. These spores then further develop into male gametophytes (pollen grains) in the case of microsporogenesis.

The options "Loosely arranged haploid homogenous cells," "Compactly arranged haploid homogenous cells," and "Compactly arranged diploid heterogenous cells" do not accurately describe sporogenous tissue.