<u>Answer:- </u> <em>Option a </em>radial symmetry
<u>Explanation:- </u>
Most of the organisms have can either of the two types of symmetry:-
1. <em>Bilateral symmetry</em>- A body is said to have a bilateral symmetry when it can be divided into 2 equal halves on either side of a <em>single</em> plane.
For e.g if you cut the letter M from middle vertically then you have two equal halves.
2. <em>Radial symmetry</em> - A body is said to be radially symmetrical if it can be divided into similar halves in <em>any</em> plane. This means that the organism has its body parts arranged around a central main axis.
The <em>cnidarians whether in polyp or medusa from exhibit radial symmetry because if you cut them in any plane you will get equal halves.</em>
It helps in protecting against sedimenting particles
Answer: Two pairs of each chromosome
Explanation: Diploids are cells that contain two pairs of each chromosomes. In humans each cell contains 23 pairs of chromosomes resulting in 46 chromosomes total for each cell.
Answer:
The changes in the population of a species in a stable ecosystem has diverse effects on the ecosystem on the whole.
The reduction in the baleen whale population will cause a rapid increase on the prey organisms on which the baleen whale fed. This is because the number of predators for these preys will decrease.
On the other hand, the number of organisms which fed on the baleen whale will decrease as they will have lesser amounts of food available.
