Correct option is B
The correct answer is: 2. A – Three, B – Four, C – Two, D – Three
Explanation:
The question asks for the number of cutting faces (planes) for different types of apical cells in liverworts. Let's go over the four types of apical cells mentioned:
A. Tetrahedral: Tetrahedral cells typically have three cutting faces. The tetrahedral shape involves three planes that divide the cell into smaller parts, not four as previously stated.
B. Cuneate: Cuneate apical cells have four cutting faces. These wedge-shaped cells divide into four parts through four planes.
C. Lenticular: Lenticular cells, which are lens-shaped, have two cutting faces, forming two planes.
D. Hemidiscoid: Hemidiscoid cells, which are disc-shaped, also have three cutting faces that divide the cell into three sections.
Information Booster:
Tetrahedral cells (A) have three cutting planes that divide the cell into three parts.
Cuneate cells (B) are wedge-shaped and split into four parts through four planes.
Lenticular cells (C) are lens-shaped with only two planes dividing them.
Hemidiscoid cells (D) have three cutting faces that divide the cell into three parts.
The number of cutting faces is related to the shape of the apical cell and its role in thallus development.
These diverse shapes and cutting planes enable liverworts to grow in a variety of forms, contributing to their adaptability and development.
