Year : 
2020
Title : 
Biology
Exam : 
JAMB Exam

Paper 1 | Objectives

11 - 20 of 40 Questions

# Question Ans
11.

What is the term used to describe biotic and abiotic factors in the environment of the organism?

A. habitat

B. biome

C. ecosystem

D. ecological niche

Detailed Solution

An ecosystem consists of all the biotic and abiotic factors that influence that community.
There is an explanation video available below.
12.

Which of the following instruments is NOT used in measuring abiotic factors in any habitat?

A. microscope

B. thermometer

C. hygrometer

D. windvane

Detailed Solution

Common abiotic factors are atmosphere, chemical elements, sunlight/temperature, wind and water, all other options are instrument used to measure these apart from microscope which can be used to observe small objects, even cells.
There is an explanation video available below.
13.

The smallest living organism which share the characteristics of both living and non-living matter are

A. bacteria

B. fungi

C. viruses

D. protozoa

Detailed Solution

There is an explanation video available below.
14.

The process by which a red blood cell placed in distilled water absorbs water until it burst and realease it's content into the surrounding is known as

A. osmosis

B. plasmolysis

C. turgidity

D. hemolysis

Detailed Solution

Your body normally destroys old or faulty red blood cells in the spleen or other parts of your body through a process called hemolysis
There is an explanation video available below.
15.

Which of the following waste products in plants is excreted through the stomata and lenticles?

A. carbon dioxide

B. alkaloids

C. tannins

D. anthoocyanins

Detailed Solution

The waste products of a plant are carbon dioxide, water vapour and oxygen.
There is an explanation video available below.
16.

Use the diagram to answer the question
The vertebra illustrated is

A. lumber

B. thoracic

C. caudal

D. cervical

Detailed Solution

There is an explanation video available below.
17.

Use the diagram to answer the question
The neural arch is labelled

A. i

B. ii

C. iii

D. iv

Detailed Solution

There is an explanation video available below.
18.

The excretory structure in the earthworm is the

A. malphighian tubule

B. flame cell

C. nephridium

D. kidney

Detailed Solution

Nephridia remove metabolic wastes from an animal's body. Nephridia come in two basic categories: metanephridia and protonephridia.
There is an explanation video available below.
19.

In which of the following vertebrates does the skin function as a respiratory surface

A. rat

B. lizard

C. fish

D. frog

Detailed Solution

Amphibians utilize gills for breathing early in life, and develop primitive lungs in their adult life; additionally, they are able to breathe through their skin.
There is an explanation video available below.
20.

The process of walking is under the control of the part of the brain called

A. optic lobe

B. olfactory lobe

C. cerebellum

D. medulla oblongata

Detailed Solution

Coordination of voluntary movements. Most movements are composed of a number of different muscle groups acting together in a temporally coordinated fashion. One major function of the cerebellum is to coordinate the timing and force of these different muscle groups to produce fluid limb or body movements.
There is an explanation video available below.
11.

What is the term used to describe biotic and abiotic factors in the environment of the organism?

A. habitat

B. biome

C. ecosystem

D. ecological niche

Detailed Solution

An ecosystem consists of all the biotic and abiotic factors that influence that community.
There is an explanation video available below.
12.

Which of the following instruments is NOT used in measuring abiotic factors in any habitat?

A. microscope

B. thermometer

C. hygrometer

D. windvane

Detailed Solution

Common abiotic factors are atmosphere, chemical elements, sunlight/temperature, wind and water, all other options are instrument used to measure these apart from microscope which can be used to observe small objects, even cells.
There is an explanation video available below.
13.

The smallest living organism which share the characteristics of both living and non-living matter are

A. bacteria

B. fungi

C. viruses

D. protozoa

Detailed Solution

There is an explanation video available below.
14.

The process by which a red blood cell placed in distilled water absorbs water until it burst and realease it's content into the surrounding is known as

A. osmosis

B. plasmolysis

C. turgidity

D. hemolysis

Detailed Solution

Your body normally destroys old or faulty red blood cells in the spleen or other parts of your body through a process called hemolysis
There is an explanation video available below.
15.

Which of the following waste products in plants is excreted through the stomata and lenticles?

A. carbon dioxide

B. alkaloids

C. tannins

D. anthoocyanins

Detailed Solution

The waste products of a plant are carbon dioxide, water vapour and oxygen.
There is an explanation video available below.
16.

Use the diagram to answer the question
The vertebra illustrated is

A. lumber

B. thoracic

C. caudal

D. cervical

Detailed Solution

There is an explanation video available below.
17.

Use the diagram to answer the question
The neural arch is labelled

A. i

B. ii

C. iii

D. iv

Detailed Solution

There is an explanation video available below.
18.

The excretory structure in the earthworm is the

A. malphighian tubule

B. flame cell

C. nephridium

D. kidney

Detailed Solution

Nephridia remove metabolic wastes from an animal's body. Nephridia come in two basic categories: metanephridia and protonephridia.
There is an explanation video available below.
19.

In which of the following vertebrates does the skin function as a respiratory surface

A. rat

B. lizard

C. fish

D. frog

Detailed Solution

Amphibians utilize gills for breathing early in life, and develop primitive lungs in their adult life; additionally, they are able to breathe through their skin.
There is an explanation video available below.
20.

The process of walking is under the control of the part of the brain called

A. optic lobe

B. olfactory lobe

C. cerebellum

D. medulla oblongata

Detailed Solution

Coordination of voluntary movements. Most movements are composed of a number of different muscle groups acting together in a temporally coordinated fashion. One major function of the cerebellum is to coordinate the timing and force of these different muscle groups to produce fluid limb or body movements.
There is an explanation video available below.