2021 Ijmb Biology Practical Questions and answer.

Our 2021 Ijmb Biology Practical Questions and answer was droped midnight today so all our vip candidate that wrote this biology practical was so lucky , why can’t you subscribe now and make your next paper sweeter than this one you write with your head kindly Join our general ijmb A-Level WhatsApp group HERE and chat the admin for assistance note out 2021 ijmb expo is not for free have that in mind is just 15,000 for 3 Subject plus practical. For our today expo take a look at the question below :




1ai.
Anatomical Basis of the reflex arc
1aii.
1. Effector.
2. Receptor.
3. Sensory Neuron.
4. Dorsal root ganglian.
5. White Matter.
6. Grey Matter.
7. Association Neuruon.
8. *******
9. Ventral Root.
10. Motor Neuron.
1aiii.
1. Make the body to react to a stimulus.
2. Detect the stimulus and set up impulse.
3. Carry impulse to the spinal cord.
4.
5.
6.
7. Start off another impulse in an appropriate motor neuron.
8.
9. Carry information to control motor function.
10. Carry impulse to the effector.

1aiv.
1. Control reflexs.
2. It allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.




(2a)
Specimen E – Rat

(2b)
Phylum – Chordata.
Class – Mamalia.
Order – Rodentia.
Family – Miridae.
Genus – Rattus Rattus.

(2c)
(i) They Transmit Disease (lassa fever).
(ii). Play predatory roles.
(iii) Serve as food to some.
(iv) They consume and damage human food.
(v)They destroy articles like wires which can lead to fire if exposed and breeded.

(2d)

(2e)
{Functions}
= Small Intestine: receive food and absorb the nutrient into the body.
= Stomach: breaks down food into chyme.
= Large Intestine: Final break down of food takes place.
= Rectum: hold faeces temporarily before they are expelled.
= Oesophagus: it helps in transportation of food down to the stomach.

(2f)
(i) Helps to keep their balance.
(ii) Stick to things and help rats cross narrow parts or climb around




(3ai)

Check the diagram below

 

 

(3ii) It is given as – % ⚥ K(5) C1+2+(2) A(9)+1 G1.

(3iv)
floral formula is conventional method for recording the structure of a flower. It uses a series of capital letters to identify parts: K = calyx; C = corolla; A = androecium; G = gynoecium. The number of components in each is indicated by a number; if the number exceeds 12, the symbol ∝ (infinity) is used.

(3bi) Liliopsida

(3bii) check they pictures already drawn and labelled

(3biii)
-The horizontal underground plant stem capable of producing the shoot and root systems of a new plant.

-They are used to store starches and proteins and enable plants to perennate (survive an annual unfavourable season) underground.

(3ci)




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