What are the mechanisms that protect and nurture the embryo in oviparous animals? a. The hard leathery exterior of bird eggs and the hard calcium covering of reptile eggs provides protection to the growing embryo. Nourishment is provided by yolk in the eggs. b. The hard leathery exterior of reptile eggs and the hard calcium covering of bird eggs provide protection to the growing embryo. Nourishment is provided by endosperm in the eggs. c. The hard leathery exterior of reptile eggs and the hard calcium covering of bird eggs provide protection to the growing embryo. Nourishment is provided by placenta in the eggs. d. The hard leathery exterior of reptile eggs and the hard calcium covering of bird eggs provide protection to the growing embryo. Nourishment is provided by yolk in the eggs.
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This includes most birds, reptiles, insects, and some fish. The protection of the embryo in these animals is primarily provided by the hard or leathery exterior of the eggs. In birds, this is a hard calcium covering, while in reptiles, it is typically a leathery Show more…
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Oviparous (egg-laying) animals have internal fertilization (sperm cells encounter eggs within the female's body). Yolk and/or albumen is (are) provided to the embryo, and a shell is then deposited around the embryo and its food source. Eggs are subsequently deposited in an environment that promotes their further development, or are incubated by one or both parents. The yolk of an animal egg has what type of analog in angiosperms? a. nectar in flower b. fruit c. food supply (e.g. starch) in seed d. ovary
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Some placental animals provide nutrients to their embryos from an attached membranous yolk-containing sac. They are called: a. oviparous animals. b. ovoviviparous animals. c. metatherians. d. eutherians. e. mammals.
What occurs in the procedure known as in vitro fertilization (IVF)? a. A sperm is injected into the egg externally. b. An egg is fertilized by the sperm internally in the oviduct. c. Eggs and sperm are combined externally and then implanted. d. Egg and sperm are combined externally and the resulting embryo is implanted.
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