1 |
Blood contains ______ oxygen per 100 ml of blood when haemoglobin is 98% saturated |
19.6 ml
18.6 ml
16.6 ml
17.6 ml
|
2 |
Respiratory pigment present in muscles is called ______ |
Myoglobin
Globin
Haemoglobin
Haemocyanin
|
3 |
The respiratory system is most efficient in ______ |
Man
Bird
Fish
Snake
|
4 |
Air spaces between mesophyll cells of a leaf comprise ______ of the total volume |
20%
30%
40%
50%
|
5 |
The animals having structurally and functionally intermediate teeth between herbivores and carnivores are |
Insectivores
Detritivores
Saprozoic
Omnivores
|
6 |
Canines are missing in |
Cats
Birds
Lions
Tigers
|
7 |
Feeding by living in or on other organisms is a |
Parasite
Fungicide
Insecticide
Saprophyte
|
8 |
Release of nitrates by saprophytic bacteria helps in |
Carbon cycle
Oxygen cycle
Nitrogen cycle
Water cycle
|
9 |
Lack of chlorophyll results in |
Diagnosis
Chlorosis
Phosphorus
Symbiosis
|
10 |
Chlorophyll contains |
Sulphur
Nitrogen
Magnesium
Calcium
|
11 |
Nitrogen is present in |
Carbohydrates
Proteins
Fats s
Carbonates
|
12 |
Which of the following animals has no need for a gall bladder |
Cat
Man
Lion
Goat
|
13 |
Many human become ill from consuming milk and milk products because they lack |
Bacteria in their intestine
Rennin
Lactase
Hydrochloric acid
|
14 |
A mammalian herbivore has |
Fewer teeth than a carnivore
Flatter teeth than a carnivore
More teeth than a carnivore
More pointed teeth than a carnivore
|
15 |
The structure in the mouth that prevents food from entering the nasal cavity is |
Epiglottis
Soft palate
Tongue
Pharynx
|
16 |
Mucus in saliva is made of |
Glycolipids
Glycoproteins
Phospholipids
Saturated fatty acids
|
17 |
Digestion in Hydra and Planaria takes place within their |
Coelom
Alimentary cannal
Gastrovascular cavity
Mouth
|