Keep refreshing to get your question and answers. Note that answers are load in batches so you need to keep refreshing

5) male: armpit and pubic hair

ii)broad chest

Iii) loud voice

Female: Armpit and pubic hair

Ii) growth of breast

Iii) menstrual cycle

(6ai)
The enormous energy of lightning breaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth.
(6aii)
This organism oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in bioremediation. They are important in the nitrogen cycle by increasing the availability of nitrogen to plants while limiting carbon dioxide fixation.
(6aiii)
Azotobacter helps to synthesizes some biologically active substances, including some phytohormones such as auxins, thereby stimulating plant growth.

3c) Saprophytes are organisms that feed on dead or decayed organic matter or plant and animal remains.

3cii) Mucor, Rhizopus and Algae

4) offsprings are HbAS,HbAs, HbAA, HB AA

4b) phenotypic ratio is 2:2 I.e 2 normal, 2 sickler

6b)
(I) Malphigan tube
(ii) Nephridium
(6c)
(i) Hepatitis :- This is a liver disease defined as inflammation of the liver. It may occur as a result of viral infection or toxic substances like poisons or drugs. This disease makes the liver unable to perform it’s functions properly.
(ii) Kidney stones:- This is caused by diseased growth in the kidneys within the tubules. This growth narrows rye tubules preventing free flow of urine. It most causes complete blockage of. Urine results.
6di)
I. It makes the system insensitive.
II. It Mars the protective role of the system.
III. Temperature will be poorly regulated.

(6dii)
(i)Cornified layer.
(ii)Granular layer.
(iii)Malphigean layer.
(6ei)
Metamorphosis is the series of gradual changes of forms and shape of insect from the fertilized egg to adult.
(6eii)
Grasshopper – Incomplete
Cockroach – Incomplete
Butterfly – complete
Mosquito – complete
Housefly – complete

Question 1…in table

  1. Tadpole…….wet
  2. Cockroach….. Dry
  3. Domestic fowl…dry
  4. Talium….very wet
  5. Earthwarm…..wet body surface
  6. Amoeba….wet body surface

Biology -Obj

ANYTHING YOU DIDN’T SEE AT UP, CHECK BELOW….. BEST OF LUCK

BIOLOGY-ANSWERS

CORRECTED OBJECTIVES….. PLEASE NOTE


41ACDDABDCDB

25) D, 26) B,43) A

No. 10) C, 25) D,….,…….the corrected ones
: 26) C
: 43) A

(3a)
TABULATE
Under PARASITISM:
-Mistletoe and cacao plant.
-Tapeworm in the gut of humans.
-Lichen
Under MUTUALISM:
-Cattle and white egret.
-Flowers and honeybee
Under COMMENSALISM:
-Remora and shark.
(3bi)
(i) They have strong suckers and hooks.
(ii) They have large surface area for absorptions of nutrients.
(iii) They have thin and flattened shape.
(3bii)
[Pick any Two]
(i) They have blood loss.
(ii) They cause diarrhoea.
(iii) They cause severe loss of weight.
(3ci)
Saprophytes are mainly non-green plants which do not have chloroplasts and therefore cannot manufacture their own food.
(3cii)
[Pick any Four]
(i) Rhizopus
(ii) Mushroom
(iii) Mucor.
(iv) Agaricus

(v) Yeast

(2a)
(i) Meat type A and meat type D
(ii) they contain the lowest fat content
(2bi)
(i)Meat type C and meat type D
(ii)

  • Proteins gives energy
  • Strengthens muscle
    (2ci)
    (i) A, C & D
    (ii) A person deficient in protein suffers kwashiokor. Hence a diet with high content in protein is needed.
    (2di)
    Meat type D
    ii) Meat type F
    (2e)
    carbohydrates
    (2f)
  • For energy and heat to keep the body warm
  • Are used as insulators to nerves and cell membranes
  • Formation of cell membranes
    (2g)

Drop the meat on a white paper observe the meat against a source of light, the far part becomes more translucent

(1ai)

  • Tadpole – Skin
  • Cockroach – trachea
  • Domestic fowl – lungs
  • Talinum – stomata
  • Earthworm – Skin
  • Amoeba – cell membrane
    (1aii)
  • Large surface area
  • Thin respiratory surface
  • Moist surface
  • Efficient transport system

– Permeability

(6ai)
The enormous energy of lightning breaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth.
(6aii)
This organism oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in bioremediation. They are important in the nitrogen cycle by increasing the availability of nitrogen to plants while limiting carbon dioxide fixation.
(6aiii)
Azotobacter helps to synthesizes some biologically active substances, including some phytohormones such as auxins, thereby stimulating plant growth.
6b)
(I) Malphigan tube
(ii) Nephridium
(6c)
(i) Hepatitis :- This is a liver disease defined as inflammation of the liver. It may occur as a result of viral infection or toxic substances like poisons or drugs. This disease makes the liver unable to perform it’s functions properly.
(ii) Kidney stones:- This is caused by diseased growth in the kidneys within the tubules. This growth narrows rye tubules preventing free flow of urine. It most causes complete blockage of. Urine results.
6di)
I. It makes the system insensitive.
II. It Mars the protective role of the system.
III. Temperature will be poorly regulated.
(6dii)
(i)Cornified layer.
(ii)Granular layer.
(iii)Malphigean layer.
(6ei)
Metamorphosis is the series of gradual changes of forms and shape of insect from the fertilized egg to adult.
(6eii)
Grasshopper – Incomplete
Cockroach – Incomplete
Butterfly – complete
Mosquito – complete

Housefly – complete

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.