Answer:
Biological species.
Explanation:
Various concept like morphology species concept, ecological species concept was introduced by the scientists to explain the biological species. The biological species concept is accepted today.
The biological species concept explains that the group of interbreeding population that has the ability to reproductively isolated from the other such group.
Thus, the correct answer is option (c).
Answer:
Cells divide twice
Explanation:
Meiosis may be defined as the process of cell division in which a single cell divides to give four daughter cells and each daughter cells have half number of chromosomes.
Meiosis is also known as reduction division as the chromosome number reduces upto half in the progeny cells as compared with the parent cell. The cells divide twice in meiosis and give rise to four daughter cells.
Thus, the correct answer is option (4).
Sensory peripheral nervous system and the motor peripheral nervous system
Base on the question that asks to choose among the following choices that is significance of the apical meristem, base on the fact, apical meristem is found at the apices or tips of the plant, both the tip of the shoot and the root and is a region of actively dividing cells. Base on that the answer would be "It provide strength to the plant by facilitating secondary growth"
