Kwashiorkor is a PEM (Protein Energy Malnutrition) observed in children of the age group of 1-5 years. Wasted muscles, thin limbs, retarded growth of body and brain, swelling of legs due to retention of water, reddish hair, potbelly, and diarrhea are the symptoms seen in such people.

Chlorophyll d is the pigment found in red algae.

Chlorophyll d is one of the rarer forms of photosynthetic pigment and is only found in species of red algae and cyanobacteria. This chlorophyll helps the algae and other photosynthetic organisms living in deep water where not much other light can penetrate. Red algae are red due to phycoerythrin.

The biological world organisation begins with the submicroscopic molecular level which further broadens to the cellular level and organismic level. The submicroscopic molecular level consists of proteins, carbohydrates, lipids and nucleic acids organised into organelles of the cell.

Vallisneria is a submerged aquatic plant. Pollination in this plant is epihydrophilous. Pollination is achieved with the help of water. The male flowers are released from the staminate flowers and reach the water surface and expose the stamens. A single large female flower develops underwater and comes to the surface through the elongation of its peduncle. The male flowers that are dispersed aggregates around a female flower and pollination happen with contact between a stamen and the stigma. After pollination, the peduncle of the female flower coils up tightly and gets retracted underwater.

We know that the unit of power is watt and it is also represented as:

Watt=Joule/second

Also,  watt=Ampere×volt

And watt=Ampere×Ohm

So, option D is not the unit of power i.e. watt.

The epiglottis moves back and forth to prevent the passage of food and liquids into the lungs. The usual upright position of the epiglottis allows air to flow into the lungs and the larynx. When you swallow, the epiglottis flattens backward to cover the entrance to your larynx and prevent food from entering the lungs and windpipe. The epiglottis returns to its usual position after swallowing. 

In chelation, ring formation occurs because two atoms from the same ligand coordinate with the metal atom. This cannot happen if the ligand is monodentate.

Oxalate is a bidentate ligand so it forms a chelate. It can coordinate with both of its negatively charged O atoms.

Acetate, cyanide and ammonia are monodentate ligands. They do not form chelates.

Ctenophora is a phylum of animals that live in marine waters. The outer surface bears usually eight comb rows. This is called as comb plates or swimming-plates, which are used for swimming. Ctenophora lack stinging nematocysts. Lasso cells are kind of defensive and offensive stinging cells. These are found in great numbers in all coelentrates.

Average kinetic energy does not depend on the nature of the gas and their weight. It only depends on temperature. This same temperature condition is given. So, kinetic energies are same.

Then, KE₁ = KE₂