Question 1 of 20 2,572 total questions
A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that
A the salt solution is more concentrated that the cell sap of the kolanut
B the cell sap of the kolanut is more concentrated than the salt solution
C the salt solution has the same concentration as the cell sap of the kolanut
D kolanut cell can multiply in water
E the kolanut lost some water molecules to the salt solution
Water is required for seed germination to take place because it
A activates the enzymes
B softens the testa
C liberates energy for growth
D permits radicle growth
E allow oxygen to diffuse into the seed
A true fruit is formed from
A a fertilized ovary and other floral parts
B a fertilized ovary
C a fertilized ovary and calyx
D a fertilized ovary and fleshy receptacle
E an unfertilized ovary and other floral part
The organ through which food and oxygen are supplied to the human embryo and which also prevents harmful materials from reaching the embryo is the
A amnion
B uterus
C placenta
D umbilical cord
E fallopian tube
Which of the following organs produces bile?
A Gall bladder
B Pancreas
C Spleen
D Liver
E Stomach
Human beings require vitamins in their diet because vitamins
A contain carbohydrates and fats
B prevent kwashiorkor
C stimulate the alimentary canal
D digest proteins in the body
E influence many important chemical processes in the body
Milk can be pasteurized by
A the addition of common salt
B boiling for one hour
C heating to 75o c for 20 minutes
D the addition of vinegar
E heating to 100o c for 12 hours
Some of the features of an animal are scales, teeth, nares and backbone. The animal is likely to be a
A Toad
B Bird
C Lizard
D Rat
E Bat
Which one of the following animals is NEVER a secondary host of tapeworms?
A cow
B Fish
C Pig
D Man
E Dog
The vacuole of a plant cell is
A a large empty space
B smaller than that of animal cell
C filled with air
D an ordinary vacuum
E surrounded by a membrane
Which of the following spreads malaria in Nigeria?
A Anopheles mosquito
B Culex mosquito
C Aedes mosquito
D Tsetse fly
E House fly
One of the following statement is NOT true of spirogyra
A it is a simple multicellular plant
B during conjugation, its gametes, which are structurally and physiologically similar, fuses to form a zygote
C it possesses spiral chloroplast which enables the plant to photosynthesize
D its cells are protected externally by layer of mucilage
E there are pyrenoids along the chloroplast
In Mucor or Rhizopus carbohydrate is absorb in the form of
A starch
B sucrose
C glucose
D glycogen
E arabinose
The arrangements below are steps in protein digestion. Which is the correct sequence?
A a-b-c-d
B c-d-a-b
C b-d-a-c
D a-d-b-c
E b-a-c-d
The figure above is a section of a drupe. The part numbered 2 is
A epicarp
B endocarp
C mesocarp
D seed
E pericarp
In the figure above the cell which controls the opening and closing of stomatal pore is
One significant difference between roots and stem is that
A Branch roots originate in the pericycle while stem do not
B Stems are always bove the ground while root are always below the ground
C Stems are positively geotropic while roots are negatively geotropic
D Stem are sometime used for storage while roots are never used
E Stems grow in both length and circumference while root grow only in length
Magnesium is utilized in the formation of
A ATP
B Glucose
C Amino acids
D Chlorophyll
E Fats
The element nitrogen is utilized in
A Formation of ATP
B Formation of glucose
C Formation of amino acid
D Photosynthesis
E None of the above
Root hair have their origin from
A Endodermis
B Pericycle
C Cortex
D Epidermis
E Xylem
Next
Question Navigator
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
