Explanation

• Meiosis is a type of cell division that occurs in germ cells (reproductive cells) to produce gametes (sperm or egg cells).
• It does not produce new somatic cells (non-reproductive cells).

Explanation

Meiosis in animals produces gametes, which are the reproductive cells (sperm and egg cells) that are necessary for sexual reproduction.

Meiosis is the process by which a diploid (having two sets of chromosomes) cell divides to produce four haploid (having one set of chromosomes) cells, each with half the number of chromosomes as the parent cell.

Explanation

These six quantities (length, mass, electric current, time, intensity of light, and amount of substance) are the fundamental base quantities in the International System of Units (SI).

They are the basic building blocks of the SI system and are used to define all other quantities.

Explanation

The L shell, also known as the second electron shell, has 02 subshells:

The L shell contains two subshells - 2s, 2p.

The M shell contains three subshells - 3s, 3p, 3d.

The N shell contains four subshells - 4s, 4p, 4d, 4f

Explanation

• Neutrons are the most penetrating, because they have no charge and a relatively large mass compared to electrons and protons.
• This allows them to travel long distances through matter without being deflected or absorbed, making them highly penetrating.

Explanation

• In the context of phloem transport, "source" refers to the location where sucrose is produced (usually leaves).
• While "sink" refers to the location where sucrose is consumed or stored (e.g., roots, stems, fruits, and storage organs).
• A mature leaf is typically a source, not a sink, as it produces sucrose through photosynthesis.

Explanation

Mitosis is a type of cell division that involves the replication of a cell's DNA and the division of the cell into two daughter cells. It is essential for:

• Growth: Mitosis allows an organism to grow and develop by increasing the number of cells.
• Repair: Mitosis helps replace damaged or dead cells with new ones.
• Asexual reproduction: Mitosis enables asexual reproduction, where an organism produces offspring that are genetically identical to the parent.

Explanation

• Ribosomes are responsible for protein synthesis, not steroid synthesis.
• Steroid synthesis occurs in the endoplasmic reticulum and other organelles, but not in ribosomes.

Explanation

• The odd one out is Active transport.
• Active transport requires energy (ATP) to move substances against their concentration gradient.
• Whereas diffusion, facilitated diffusion and osmosis are passive processes.

Explanation

• The rough endoplasmic reticulum (RER) is responsible for synthesizing proteins, which are then transported to other parts of the cell or secreted outside.
• The RER has ribosomes attached to its surface, where protein synthesis occurs.