Q. Increase in intensity of light increases

View solution

Q. Two species of acetabularia have been identified on basis of

View solution

Q. From rhizoid of acetabularia, a stalk arises having a

View solution

Q. Leaf primordial are cells committed to become

View solution

Q. Reciprocal relationship between growth and development is known as

View solution

Q. Cells at periphery of blastoderm are

View solution

Q. Cells responsible for increase in number of cells at tips of roots and stem are

View solution

Q. Immediately after fertilization, egg undergoes a series of divisions called

View solution

Q. In artificial incubators, temperature is usually regulated between

View solution

Q. Indole-3-acetic acid (IAA) causes

View solution

Q. Under central cells of blastoderm, a pool of fluid develops giving area a translucent appearance called

View solution

Q. Somites are seen in emryo of about

View solution

Q. Rounded closely packed mass of blastomeres is called

View solution

Q. At each end of nural tube, small openings are present and called as

View solution

Q. Hypoblast is mainly presumptive

View solution

Q. Number of people over age 80 is

View solution

Q. At cephalic end of primitive streak, closely packed cells form a local thickening known as

View solution

Q. During elongation, cell volume increases due to

View solution

Q. Study of growth and differentiation undergone by an animal from zygote into a highly complex individual is called

View solution

Q. Hans Driesch in his experiment took egg of

View solution