Multiple Choice Questions in Science: Chapter 12 : NUTRITION AND RESPIRATION

Choose Appropriate Alternative

Which of the following types of organism has the longest small intestine?
```
[A] Carnivores [B] Omnivores [C] Herbivores [D] Autotrophs
```

The process of obtaining food by amoeba is known as...

[A] Dialysis [B] Cytokinesis [C] Phagocytosis [D] Amoebiosis

Which organism possesses parasitic mode of nutrition?

[A] Penicillium [B] Plasmodium [C] Paramoecium [D] Euglena

Which one of the following organisms has saprophytic mode of nutrition?
```
[A] Mushroom [B] Malarial parasite [C] Leech [D] Lice
```
The length of small intestine in an adult human being is about...
```
[A] 4.5 m [B] 1.5 m [C] 3.5 m [D] 6.5 m
```
Where does the process of digestion of food start in human being?
```
[A] Stomach [B] Food canal [C] Mouth [D] Small intestine
```

In which organ is the process of digestion in humans completed?

[A] Oesophagus [B] Small intestine [C] Stomach [D] Large intestine

By which of the following is bile secreted in human digestive system?
```
[A] Pancreas [B] Liver [C] Kidney [D] Stomach
```

The autotrophic nutrition requires...

[A] carbon dioxide and water [B] chlorophyll [C] sunlight [D] all of the above

In human digestive system, which organs secrete enzyme pepsin and trypsin respectively?

[A] Pancreas and liver        [B] Stomach and salivary gland 
[C] Pancreas and gall bladder [D] Stomach and pancreas

Which of the following organisms can live without oxygen?
```
[A] Amoeba [B] Sheep [C] Yeast [D] Leech
```
During respiration, the exchange of gases takes place in...
```
[A] bronchi [B] alveoli [C] bronchioles [D] trachea
```
In which of the following organisms, the gaseous exchange during respiration does not take place through cell membrane or skin?
```
[A] Ray fish [B] Leech [C] Earthworm [D] Amoeba
```

Autotrophic organisms obtain nutrition by the process of...

[A] photosynthesis [B] nitrification [C] respiration [D] absorption

During cellular respiration...

[A] food is digested [B] food is absorbed [C] energy is released [D] energy is absorbed

Autotrophic means...

[A] self-control [B] self-nutrition [C] self-protection [D] nonliving

What is used to confirm the presence of starch?

[A] Alcohol [B] Sulphuric acid [C] Iodine [D] Chlorophyll

The opening and closing of stomata are controlled by...
```
[A] chlorophyll [B] guard cells [C] sunlight [D] leaf
```
What is used for removing chlorophyll from a green leaf?
```
[A] Alcohol [B] Sulphuric acid [C] Sunlight [D] Iodine
```
Organisms obtaining nutrition from dead and decaying matter are called...
```
[A] phagocytes [B] parasites [C] autotrophs [D] saprophytes
```

______ obtains parasitic nutrition.

[A] Locust [B] Cuscuta [C] Mushroom [D] Earthworm

The mode of nutrition in higher animals is...

[A] parasitic [B] saprophytic [C] autotrophic [D] holozoic

Which of the following is an omnivore?
```
[A] Goat [B] Tiger [C] Rat [D] Lion
```

The mode of nutrition in amoeba is...

[A] parasitic [B] saprophytic [C] holozoic [D] autotrophic

Which enzyme is secreted by salivary glands?

[A] Amylase [B] Pepsin [C] Invertase [D] Trypsin

What does enzyme amylase do?

[A] Converts glucose to starch [B] Converts starch to maltose
[C] Converts starch to protein [D] Converts proteins to amino acids

Which of the following is not a component of gastric juice?

[A] Hydrochloric acid [B] Pepsinogen  [C] Nitric acid [D] Mucus

Enzyme pepsin digests...

[A] starch [B] cellulose [C] lipids [D] proteins

The small intestine receives secretions from...

[A] liver [B] pancreas [C] both liver and pancreas [D] gall bladder

Bile secreted by liver is...

[A] alkaline [B] acidic [C] neutral [D] both alkaline and acidic

Pancreatic juice contains...

[A] amylase [B] trypsin [C] lipase [D] all three

Which enzyme helps in digestion of fat?

[A] Amylase [B] Trypsin [C] Lipase [D] Both amylase and trypsin

In holozoic nutrition ______ is the last step involved.

[A] digestion [B] absorption [C] assimilation [D] ingestion

The process of releasing energy from food is called...

[A] digestion [B] nutrition [C] assimilation [D] respiration

The energy released during respiration is stored in...
```
[A] ATP [B] mitochondria [C] lungs [D] cell nucleus
```
During anaerobic respiration, glucose molecules are broken down to _____ in animal muscle cells.
```
[A] ethanol [B] lactic acid [C] ethylene [D] glycogen
```
In plants, the end products of anaerobic respiration are CO₂ and...
```
[A] ethanol [B] lactic acid [C] water [D] starch
```

Aerobic respiration takes place in...

[A] cytoplasm [B] mitochondria [C] both cytoplasm and mitochondria [D] lungs

Anaerobic respiration takes place in...

[A] cytoplasm [B] mitochondria [C] both cytoplasm and mitochondria [D] lungs

Which of the following parts of plants perform respiration?
```
[A] Roots [B] Stem [C] Leaves [D] All three
```

In woody plants, respiratory gaseous exchange in stems takes place through...

[A] stomata [B] lenticels [C] both stomata and lenticels [D] specific tissues

Respiration in amoeba occurs through...

[A] gills [B] pseudopodia [C] cell membrane [D] vacuole

Earthworm respires through...

[A] trachea [B] lungs [C] skin [D] cilia

Which of the following organisms does not use gills for respiration?
```
[A] Fish [B] Euglena [C] Prawn [D] Crab
```

______ use gills for respiration.

[A] Paramoecium [B] Earthworm [C] Euglena [D] Sepia

______ prevents food from entering trachea.

[A] Glottis [B] Epiglottis [C] Mucus [D] Pharynx

______ plays an important role in breathing.

[A] Diaphragm [B] Alveoli [C] Trachea [D] Glottis

Which process is involved in respiratory gaseous exchange?
```
[A] Swallowing [B] Diffusion [C] Oxidation [D] Glycolysis
```

The living organisms obtain nutrition from...

[A] energy [B] food [C] environment [D] sunlight

During which process energy is released from the absorbed food?

[A] Respiration [B] Nutrition [C] Photosynthesis [D] Chemosynthesis

Which of the following processes is responsible for the change in the size of the organism?
```
[A] Reproduction [B] Excretion [C] Movement [D] Growth
```
The organisms which can synthesize their own food from natural inorganic substances are called...
```
[A] autotrophs [B] heterotrophs [C] saprophytes [D] herbivores
```

Autotrophic organisms possess ______ pigment.

[A] haemoglobin [B] melanin [C] chlorophyll [D] phenolphthalin

Which inorganic substances are used by autotrophs to synthesize food in presence of sunlight and chlorophyll?
```
[A] CO₂ and O₂ [B] CO₂ and NO₂[C] CO₂ and H₂O [D] CO₂ and H₂
```

Apart from green plants photosynthesis is also seen in...

[A] euglena [B] volvox [C] mushroom [D] both euglena and volvox

We derive energy from the food which is stored in the body as...
```
[A] starch [B] glucose [C] glycogen [D] lactose
```
In which of the following parts of the plants is photosynthesis seen to occur mostly?
```
[A] Leaves [B] Roots [C] Stem [D] Flowers
```

The products of photosynthesis are...

[A] CO₂ and O₂[B] CO₂ and H₂O [C] Glucose and O₂ [D] CO₂ and glucose

What type of energy conversion takes place during photosynthesis?

[A] Chemical energy to light energy [B] Light energy to chemical energy
[C] Light energy to heat energy    [D] Light energy to atomic energy

During photosynthesis carbohydrates are formed by _______ of CO₂.
```
[A] oxidation [B] reduction [C] carboxylation [D] hydrolysis
```

The opening and closing of stomata is controlled by...

[A] epidermal cells [B] epithelial cells [C] lenticels [D] guard cells

The mode of nutrition in which one organism obtains nutrition from other organisms is known as...
```
[A] autotrophic nutrition [B] heterothrophic nutrition 
[C] saprophytic nutrition [D] symbiosis
```
When one living organism depends on another living organism for nutrition, the mode of nutrition is called...
```
[A] parasitic nutrition [B] saprophytic nutrition [C] symbiosis [D] holozoic nutrition
```

Which of the following is the correct order for process of nutrition?

[A] Digestion, absorption, assimilation, egestion 
[B] Absorption, assimilation, egestion, ingestion 
[C] Ingestion, digestion, absorption, assimilation
[D] Digestion, absorption, ingestion, egestion

Amoeba uses ______ for ingestion of food.

[A] tantacles [B] pseudopodia [C] cilia [D] oral opening

In amoeba, the absorption of digested food takes place in...

[A] cytoplasm [B] cell membrane [C] food vacuole [D] nucleus

Which of the following is the correct order of human digestive organs?

[A] Mouth, oesophagus, stomach, small intestine, large intestine 
[B] Stomach, large intestine, small intestine, oesophagus, mouth
[C] Mouth, stomach, oesophagus, large intestine, small intestine
[D] Mouth, small intestine, stomach, large intestine, oesophagus

In which organ does the first digestion of starch occur in humans?
```
[A] Stomach [B] Small intestine [C] Large intestine [D] Mouth
```
Approximately for how much time does food remain in stomach?
```
[A] 30 minutes [B] 3 hours [C] 6 hours [D] 8 hours
```

What is the nature of gastric juice?

[A] Acidic [B] Alkaline [C] Neutral [D] Basic

In humans, the process of digestion of food ends in...

[A] stomach [B] small intestine [C] large intestine [D] liver

Fats are broken into small globules by...

[A] bile salt [B] hormones [C] pepsin [D] amylase

Which of the following converts starch to glucose, proteins to amino acids and fats to glycerol?
```
[A] Gastric juice [B] Bile salts [C] Intestinal juice [D] Pepsinogen
```

Where are the nutrients of the digested food absorbed?

[A] In small intestine [B] In stomach [C] In large intestine [D] In oesophagus

Which type of reaction is respiration?

[A] Oxidation [B] Reduction [C] Hydrolysis [D] Pyrolysis

During glycolysis, glucose is converted to...

[A] starch [B] cellulose [C] pyruvic acid [D] CO₂

How many ATP molecules are produced after complete oxidation of a glucose molecule?
```
[A] 2 [B] 8 [C] 18 [D] 38
```
How many ATP molecules are produced from one molecule of glucose during anaerobic respiration?
```
[A] 2 [B] 8 [C] 18 [D] 38
```

Which of the following functions is carried out by stomata?

[A] Photosynthesis [B] Respiration [C] Exchange of gases [D] Absorption of water

The first and the last organs of human respiratory system are...

[A] Nostrils, lungs [B] Nasal cavity, lungs [C] Buccal cavity, trachea [D] Pharynx, trachea

Which of the following shows anaerobic phase of aerobic respiration?

[A] Gluconeogenesis [B] Respiration [C] Glycolysis [D] Both respiration and glycolysis

```
[A][B][C][D]
```

ANSWERS

(1) C (2) C (3) B (4) A (5) D (6) C (7) B (8) B (9) D (10) D (11) C (12) B (13) A (14) A (15) C (16) B (17) C (18) B (19) A (20) D (21) B (22) D (23) C (24) C (25) A (26) B (27) C (28) D (29) C (30) A (31) D (32) C (33) C (34) D (35) A (36) B (37) A (38) C (39) A (40) D (41) B (42) C (43) C (44) B (45) D (46) B (47) A (48) B (49) B (50) A (51) D (52) A (53) C (54) C (55) D (56) C (57) A (58) C (59) B (60) B (61) D (62) B (63) A (64) C (65) B (66) A (67) A (68) D (69) B (70) A (71) C (72) A (73) C (74) A (75) A (76) C (77) D (78) A (79) C (80) A (81) C (82) (83) (84) (85) (86) (87) (88) (89) (90)