WorksheetsSCIENCE-QUIZZ NO # 2
Total questions: 20
Worksheet time: 54mins
Which of the following molluscs does not belong to the group?
a. clam
b. oyster
c. scallop
d. snail
What is the term used for the top part of the rain forest?
a. emergent
b. canopy
c. forest floor
d. understory
Which food chain does occur in the forest ecosystem?
A. grass → à caterpillar → à chicken
B. corn → à mouse → à snake
C. grass → à wildebeest → à lion
D. worm berries → à caterpillar → à raven
Why is producer important in an ecosystem?
A. It is the source of food to the consumers.
B. It is an organism that eats plants.
C. It breaks down organism into smaller particles.
D. It is a series of feeding relationship.
What kind of interaction is shown when animals like crabs and mollusks help break down plant litter in a mangrove ecosystem through grazing?
A. competition
B. commensalism
C. parasitism
D. mutualism
Which of the following characterizes a tropical rainforest ecosystem?
I. It is located at the polar zones.
II. It has diverse plant and animal species
III. It is situated in tropical places.
IV. It caters to few plants and animals.
A. I and II
B. II and III
C. I and III
D. III and IV
Which is not a function of mangrove roots?
a. filter out salts
b. build up shorelines
c. absorb and store salt from the water
d. remove impurities and pollutants from water
How can mangrove plants tolerate salt water?
a. they do not absorb salt water
b. they use salt and water to make food
c. their bark is made up of salt-proof material
d. they filter salt from the water using their roots
Which of the following describes a canopy of the rainforest?
A. composed of trees that are 130 to 180 feet tall
B. about 59 feet and consists of trunk of canopy, shrubs, small plants and trees
C. consists mostly of fungi, insects, worms and litter from taller trees
D. has slender trees from a dense platform of vegetation with 60 to 129 feet.
Mangrove swamps is one of important components of the ecosystem? Where do they usually found?
A. along arctic coastlines
B. along rocky coastlines
C. along temperate coastlines
D. along tropical and subtropical coastlines
How do forests help in maintaining global climate?
A. Plants soak up large amounts of rainfall
B. Plants provide a habitat for plants and animals.
C. Plants provide materials for constructions and other needs of people.
D. Plants absorb carbon dioxide and release oxygen during photosynthesis.
Coral reefs are beneficial to marine life. In what way does it show in the following instances?
I. provide rich sources of marine food
II. protect the coastal areas from strong waves
III. provide passage for strong currents to coastal areas
IV. serve as a breeding ground of fishes and other forms of marine life
A. I and II
B. II and III
C. I and IV
D. III and IV
You heard about a plan to convert the nearby mangrove swamp to commercial area. Your neighbor agrees with the plan because they believed that the mangrove swamp has no economic value. After researching you want to discuss the issue with your neighbor. Which statement could be possibly conveying to your neighbor to not agree with the plan? Mangrove swamps ______________.
A. filter pollutants from water.
B. are beautiful ecosystems.
C. provide shelter for animals.
D. protect the coastal community from waves and provide food and business for people.
What might happen if a tropical rainforest receives little rain for a long period of time?
A. Plants will wither which cause shortage of food to lower form of animals.
B. Increase population of both plants and animals
C. Abundance of oxygen
D. Flood might occur
Which of the following is the role of crustaceans like crabs in the mangrove ecosystem?
A. They attach themselves to the roots of mangroves
B. They help break down leaf litter through grazing.
C. They serve as food of other animals.
D. They find food in the mud.
. Here are some ways of protecting and conserving wildlife, which one is not?
A. Protect a fish sanctuary.
B. Buy products made from animal parts.
C. Support programs for wildlife conservation.
D. Help raise funds for environment conservation.
What structure is found only in molluscs?
a. radula
b. shell
c.thorax
d. tube feet
Which structure makes echinoderms unique?
a. osculum
b. soft body
c.water vascular system
d. durable and scaly shells
Why do you think crocodiles and other reptiles need to expose themselves under the sun during the day?
a. to trap their prey
b. to look for a mate
c. to clean themselves
d. to maintain their body temperature
How will you describe a free living organism?
a. it is parasitic
b. it moves freely
c. it does not depend on a host for its nutrient
d. it can survive alone and does not live in colonies
