What do viruses contain?
Options:
- (A) electromagnetic energy
- (B) light energy
- (C) resistance
- (D) contamination
- (E) Deoxyribonucleicacid
- (F) Chemical energy
- (G) harmful substances
- (H) Leptospirosis
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Let's think first: Viruses contain DNA but not much else. DNA stands for Deoxyribonucleicacid. Viruses contain Deoxyribonucleicacid but not much else.... So the answer is [(E)]

In flowers, where do female gametophytes produce eggs?
Options:
- (A) fruit
- (B) ferns
- (C) plants
- (D) embryos
- (E) edible
- (F) seeds
- (G) bushes
- (H) orchids
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Let's think first: Female gametophytes produce eggs inside the ovaries of flowers. Fruits develop from the ovary of the flower. Female gametophytes produce eggs inside the fruit of flowers.... So the answer is [(A)]

What contains the green compound chlorophyll?
Options:
- (A) mitochondria
- (B) Most plants
- (C) vacuoles
- (D) color of leaves
- (E) cell walls
- (F) peachleaf willow
- (G) In their leaves
- (H) chloroplasts
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Let's think first: Chloroplasts contain the green pigment chlorophyll. Photosynthetic Pigments Photosynthetic Pigments Pigments are colorful compounds. Chloroplasts contain the green compound chlorophyll.... So the answer is [(H)]

In what way do viruses not proliferate?
Options:
- (A) adding heat
- (B) at or near the margins
- (C) They may not survive.
- (D) dry conditions
- (E) heat or cold
- (F) by indirect light
- (G) Localized damage
- (H) binary division
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Let's think first: Populations of viruses do not grow through cell division because they are not cells. Cells, the basic units of every living organism, proliferate by binary division. Viruses do not proliferate via binary division.... So the answer is [(H)]

How do echinoderms use their feet to locomote themselves?
Options:
- (A) one at a time
- (B) to move people
- (C) running and lifting
- (D) protein channels
- (E) a hydraulic system
- (F) it needs them
- (G) undulations
- (H) It helps them survive
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Let's think first: Echinoderms have a unique water vascular system with tube feet. Echinoderms have a hydraulic system of locomotion called the water vascular system. Echinoderms have a hydraulic system of locomotion with tube feet.... So the answer is [(E)]

Earthworm bodies are:
Options:
- (A) fertile
- (B) segmented
- (C) migrate
- (D) allow growth
- (E) revolving
- (F) more abundant
- (G) Loose
- (H) Absorb light
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Let's think first: Annelids are worms such as the familiar earthworm. Annelids have bodies that are segmented. The familiar earthworm has a segmented body.... So the answer is [(B)]