Biology 2020 JAMB Past Questions and Answers Online Practice

Biology 2020 JAMB Past Questions and Answers Online Practice

Attempt these Biology 2020 JAMB Past Questions and Answers if you are partaking in this year’s JAMB UTME.

You’re ready? Start…

1 The hormone which regulates the amount of glucose in the blood is called?
1. Adrenalin
2. Auxin
3. Insulin
4. Thyroxine
Correct!

Wrong!
2 Deamination occurs in the _____________?
1. Kidney
2. Pancreas
3. Spleen
4. Liver
Correct!

Wrong!
3 In an agricultural ecosystem, the biotic component consist of _____________
1. crops, pests and beneficial insects
2. crops, temperature and humidity
3. pests, beneficial insects and water
4. crops, water and soil
Correct!

Wrong!
4 Epiphytes growing on the branches of trees provide an example of the relationship known as?
1. parasitism
2. commensalism
3. saprophytism
4. holophytism
Correct!

Wrong!
5 The hypha of rhizopus is said to be non-septate because it
1. does not contain chloropyll
2. has no cross wall
3. is vacuoled
4. stores oil globus
Correct!

Wrong!
6 The function of ribosome in cells is
1. protein synthesis
2. starch synthesis
3. transport of material
4. lipid storage
Correct!

Wrong!
7 In which of the following does external fertilization take place?
1. toad
2. lizard
3. bird
4. cockroach
Correct!

Wrong!
8 The villus in the small intestine is significant because
1. Increases the surface area for absorption
2. increases the surface area for digestion
3. assists in mixing digested food
4. assists in filtering undigested food
Correct!

Wrong!
9 The butterfly is of great economic importance because
1. of it's use in scientific studies
2. it sucks nectar from flowers
3. it pollinates flowers of crops and other plants
4. it adds to the beauty of the environment
Correct!

Wrong!
10 The bright colours of the comb and feathers in the peacock are for?
1. sex differentiation
2. beauty
3. courtship
4. defence
Correct!

Wrong!
11 What is the term used to describe biotic and abiotic factors in the environment of the organism?
1. habitat
2. biome
3. ecosystem
4. ecological niche
Correct!

Wrong!
12 Which of the following instruments is NOT used in measuring abiotic factors in any habitat?
1. microscope
2. windvane
3. thermometer
4. hygrometer
Correct!

Wrong!
13 The smallest living organisms which share the characteristics of both living and non-living matter are
1. bacteria
2. fungi
3. viruses
4. protozoa
Correct!

Wrong!
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
1. osmosis
2. plasmolysis
3. turgidity
4. hemolysis
Correct!

Wrong!
15 Which of the following waste products in plants is excreted through the stomata and lenticles?
1. carbon dioxide
2. alkaloids
3. tannins
4. anthoocyanins
Correct!

Wrong!
16 Use the diagram below to answer questions 16 & 17.

The vertebra illustrated is
1. lumber
2. thoracic
3. caudal
4. cervical
Correct!

Wrong!
17 The neural arch is labelled
1. i
2. ii
3. iii
4. iv
Correct!

Wrong!
18 The excretory structure in the earthworm is the
1. malphighian tubule
2. flame cell
3. nephridium
4. kidney
Correct!

Wrong!
19 In which of the following vertebrates does the skin function as a respiratory surface
1. Rat
2. Lizard
3. Fish
4. Frog
Correct!

Wrong!
20 The process of walking is under the control of the part of the brain called
1. optic lobe
2. olfactory lobe
3. cerebellum
4. medulla oblongata
Correct!

Wrong!
21 The ability of the eyes to focus on both near and distance objects is termed
1. image formation
2. refraction
3. hypermetropia
4. accommodation
Correct!

Wrong!
22 A group pf organism of different species living in a particular area is described as a
1. colony
2. community
3. population
4. niche
Correct!

Wrong!
23 The biological association that contributes directly to succession in a community is
1. competition
2. predation
3. parasitism
4. commensalism
Correct!

Wrong!
24 Floating microscopic heterotrophs are mostly grouped as
1. phytoplankton
2. zooplankton
3. microbes
4. nekton
Correct!

Wrong!
25 Vaccination is carried out in order to
1. check the production of poison
2. stimulate the production of anti-bodies
3. increase the activities of white blood cells
4. increase the number of red blood cells
Correct!

Wrong!
26 For growth to occur in organisms, the rate of
1. anabolism must exceed that of catabolism
2. catabolism must exceed that of anabolism
3. food storage must be low
4. food storage must be high
Correct!

Wrong!
27 The probability of a baby being a boy or a girl depends on the contribution of the
1. father's sex cells
2. father's stomatic chromosome
3. mother's sex cell
4. mother's X-chromosome
Correct!

Wrong!
28 Both recesssive and dominant characters are found
1. on different chromosome in the cell
2. at the same logus of a homologous chromosome
3. at a different loci of a homologous chromosome
4. on the same chromatid in a chromosome
Correct!

Wrong!
29 In a population of living things, the parameters of size, height, weight and colors are examples of
1. continuous variation
2. non-heritable variation
3. discontinuous variation
4. physiological variation
Correct!

Wrong!
30 Use the diagram below to answer the question.

The process of water loss and intake indicated by the arrows labelled i and ii are respectively
1. evaporation and osmosis
2. exhalation and osmosis
3. osmosis and diffusion
4. urination and diffusion
Correct!

Wrong!
31 The noticeable adaptation of the animal to it's aquatic habitat is the possession of
1. webbed digits
2. four limb
3. wide mouth
4. large eyes
Correct!

Wrong!
32 Paternity disputes can most accurately be resolved through the use of
1. blood group typing
2. finger printing
3. tongue rolling
4. DNA Analysis
Correct!

Wrong!
33 Use the table below to answer the question 33 & 34

High relative humidity will be expected in Zones
1. ii and iv
2. ii and iii
3. i and iii
4. i and iv
Correct!

Wrong!
34 Which of the zones is likely to be a desert?
1. i
2. ii
3. iii
4. iv
Correct!

Wrong!
35 When bacteria swim from cold to warm regions, this is known as
1. positive phototaxis
2. negative phototaxis
3. positive thermotaxis
4. negative chemotaxis
Correct!

Wrong!
36 The only caste in the termite colony whose members can feed themselves are the
1. workers
2. reproductives
3. soldiers
4. nymphs
Correct!

Wrong!
37 Which of the following os the best explanation for a child who is phenotypically short and born of two tall parents
1. both parent possess genes for shortness
2. the father possess a gene for shortness
3. nature makes the child short
4. None of the above
Correct!

Wrong!
38 Which of the following vertebrates has the most simple structured heart
1. reptile
2. fish
3. mammal
4. Amphibian
Correct!

Wrong!
39 Use the diagram below to answer the question 39 & 40.

The type of protective adaptation exhibited by the animal is
1. disruptive colouration
2. countershading colouration
3. flash colouration
4. warning colouration
Correct!

Wrong!
40 The structure labelled (i) is
1. photosensitive
2. radiosensitive
3. chemoreceptive
4. tactile
Correct!

Wrong!