Explanation

The female gametophyte of angiospermic plants is the embryo sac.

It ilso known as the megagametophyte.

It is the haploid (containing one set of chromosomes) structure within the ovule that contains the egg cell and is responsible for fertilization.

Explanation

Apomixis is a type of seed production that occurs without the fusion of male and female gametes (fertilization).

Instead, an egg cell develops into a seed without being fertilized, resulting in offspring that are genetically identical to the parent plant.

Explanation

Suckers are shoots that arise from buds on the base of a parent plant, often at the soil line or just below.

They are a type of vegetative propagation, allowing the plant to produce new stems and roots.

Suckers can grow into new individuals, eventually forming a clump or colony.

Explanation

Ginger has rhizomes, which are horizontal underground stems that can give rise to new plants, allowing it to propagate vegetatively.

Explanation

Spores are specialized structures in unicellular organisms, such as bacteria, fungi, and some protists, that enable asexual reproduction without fusion.

Spores are highly resistant to environmental stresses and can germinate into a new individual when conditions are favorable.

Explanation

Sexual reproduction is the type of reproduction that involves the fusion of gametes (sperm and egg cells) to produce offspring with a unique combination of genetic traits.

This process introduces genetic variation, which is essential for evolution to occur.

Explanation

Reproduction is the biological process by which new individuals are produced, ensuring the continuation and survival of a species.

It is a fundamental aspect of life, allowing species to perpetuate themselves, adapt to their environments, and evolve over time.

Explanation

Antagonist muscles are pairs of muscles that work in opposite directions to control movement around a joint.

One muscle contracts while the other relaxes, and vice versa.

This opposing action allows for precise control over movement.

Explanation

Extensor muscles are responsible for straightening (extending) a limb or a joint.

They work in opposition to flexor muscles, which bend (flex) the limb or joint.

Explanation

Rickets is a condition that affects children, causing softening and weakening of bones due to a deficiency of vitamin D, calcium, or phosphorus.

This leads to bowed legs, stunted growth, and other skeletal deformities.