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

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Q. Leaf primordial are cells committed to become

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Q. Reciprocal relationship between growth and development is known as

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Q. Cells at periphery of blastoderm are

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

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

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Q. In artificial incubators, temperature is usually regulated between

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

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

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Q. Somites are seen in emryo of about

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Q. Rounded closely packed mass of blastomeres is called

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

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Q. Hypoblast is mainly presumptive

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Q. Number of people over age 80 is

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

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Q. During elongation, cell volume increases due to

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

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Q. Hans Driesch in his experiment took egg of

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Q. During differentiation phase

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Q. Hans Driesch performed his experiment on sea urchin egg in

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