1. Which of the following statements is correct? A) Both reptiles and gymnosperms evolved at about...

1. Which of the following statements is correct?

A) Both reptiles and gymnosperms evolved at about the same time, following the Permian extinction, when the earth’s climate was arid and dry.

B) Both reptiles and amphibians are more abundant and diverse as species today than at any other time in their history.

C) Amphibians rely on a larval form for development, whereas reptiles do not.

D) a and c

2. Which of the following characteristic of seeds is incorrect?

A) Seeds are produced by both Gymnosperms (conifers) and Angiosperms (flowering plants).

B) Seeds serve as an evolutionary adaptation in higher plants that replaces the functions performed by flagellated sperm cells.

C) Seeds provide a means of delaying development until conditions favor survival of the embryo; seedless plants like ferns don’t have this option and suffer very high mortality.

D) Among flowering plants, seeds are usually enveloped inside of the fleshy tissues of the fruit, whereas in conifers they are not.

3.Choose the false statement:

A) The purpose of the fruit in flowering plants is to provide a source of nourishment for young sporophyte embryos contained within the seeds.

B) A piece of wood such as you might burn in your fireplace or use to make a piece of furniture is made up of xylem tissues that once served the plant's water-transport functions.

C) Phloem is a type of vascular tissue used to transport and distribute the sugary products of photosynthesis from the leaves to other parts of the plant body.

Homework Answers

Answer #1

1.(D) B option is incorrect because Amphibians were more abundant.A and C are correct.The Permian period is a major divergence of diapsid reptiles into archosaurs(crocodiales and dinosaurs) and lepidosaurs(snakes and lizards).Reptiles do not have larval development.

2.(C) All options A,B,D are correct except C. Seeds are not found in ferns plant.They produce spore.In conifers seed are naked means not covered by ovary which convert in fleshy fruit in future.

3.(B) Both option A and C are correct .So B is false statement because burned wood used in making furniture after xylem is not used in water transport process.

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