Explanation

A group with analogous structures cannot be used to describe a species.

Analogous structures are similar due to convergent evolution, not common ancestry, and do not define a species.

Explanation

In closed-ended pipes, the closed end acts as a node for certain harmonics,

Resulting in a richer harmonic content compared to open-ended pipes.

Short pipes also tend to have richer harmonics compared to long pipes.

Explanation

Enterokinase, also known as enteropeptidase, is an enzyme produced by cells lining the duodenum in the small intestine.

It plays a crucial role in the digestion of proteins by activating trypsinogen, an inactive precursor of trypsin.

Once trypsinogen is activated by enterokinase,

it can then activate other pancreatic zymogens and initiate the digestion of proteins in the small intestine.

Explanation

A person suffering from hypertension should cut down on sodium intake,

High levels of sodium can contribute to elevated blood pressure. 

Sodium (salt) encourages your body to retain fluid, increasing the fluid volume of your blood and raising blood pressure.

Explanation

The female reproductive system consists of all of the following EXCEPT seminiferous tubules.

Seminiferous tubules are part of the male reproductive system and are involved in sperm production.

Explanation

The main function of the epididymis is to transport sperms.

It also stores and matures sperm, ensuring they are ready for ejaculation.

Explanation

Anthocerotophyta is the Latin denomination used for hornworts.

This group of non-vascular plants is characterized by their horn-like sporophytes.

Explanation

Explanation

The percentage of H₂O in bone cells is 20%.

While bones are mostly made of a mineral matrix, about 20% of bone tissue is water.

It contributing to their strength and flexibility.

Explanation

During the non-conducting state, the neuron membrane is permeable to the efflux of K⁺ (potassium ions).

This outward movement of potassium helps maintain the resting membrane potential by keeping the inside of the neuron negatively charged compared to the outside.