2019 - JAMB Biology Past Questions and Answers - page 8

71

Which of the following factors is not considered in a terrestrial habitat?

A

Temperature

B

Sunlight

C

Humidity

D

Turbidity

correct option: d

Terrestrial habitats are ones that are found on land, like forests, grasslands, deserts, shorelines, and wetlands. Terrestrial habitats also include man made habitats, like farms, towns, and cities, and habitats that are under the earth, like caves and mines

Turbidity is not a factor in terrestrial (aquatic) habitat. Turbidity also means cloudy which is an aquatic factor.

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72

What type of vertebrate assists in breathing alongside with the ribs?

A

Sacral

B

Caudal

C

Thoracic

D

Lumber

correct option: c

The thoracic cavity has several functions, including providing protection and support to the body's vital organs. The thoracic cavity is surrounded by the rib cage and several layers of membranes, which help keep the organs protected from any dangers in the environment...

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73

Which of the following statement is correct about Southern Guinea Savanna in Nigeria

A

It is the largest of all the biotic community in Nigeria

B

It has plants species like Iroko, Opepe etc

C

It has plants species like Iroko, Opepe etc

D

It has no trees

correct option: a

Southern Guinea Savanna is the largest of all biotic community in Nigeria. It is found in Oyo, Osun, Ekiti, etc.

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74

In an ecosystem, the organism which changes light energy into stored chemical energy is the

A

Consumer

B

Producer

C

Decomposer

D

Carnivore

correct option: b

In a given ecosystem the organism which changes light energy into stored chemical energy is the producer.

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75

In the theory of use and disuse Lamarck proposed that evolution occurred because of the following except

A

There is natural selection of offspring

B

There is great changes in the environment

C

Organism develop specialised characters

D

The characters are inheritable

correct option: a

Lamarckism, or Lamarckian inheritance, also known as "Neo-Lamarckism" is the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime.

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