Acetabularia crenulata has a _ shaped cap:
Correct answer: A. Irregular
- A. Irregular
- B. Umbrella
- C. Regular
- D. Disc
Explanation
Acetabularia is a unicellular alga. It is 2 to 3 inches in length and inhabits European seawater. an It has a stalk with a characteristic cap and base containing nucleus. The two species of this alga are different in the shape of their cap. Acetabularia mediterranea has an umbrella-shaped cap, while acetabularia crenulata has an irregular head.
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Embryonic development covers fertilization, cleavage, formation of the blastula and gastrula, germ layers, organ formation and differentiation. Regeneration describes the replacement of lost tissues or body parts, whereas ageing involves gradual cellular and physiological changes linked to reduced repair, altered metabolism and declining organ function.
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