Life Science MCQ » Chemistry-Papers

Name the pores in a leaf through which respi-ratory exchange of gases takes place.

Xylem

Stomata

Vacuoles

Carbohydrates in the humans are stored in the form of

Maltose

Starch

Glycogen

Which digestive juice is secreted by stomach and what it contains?

Pancreatic juice- Pepsin, salivary amylase, trypsin

Gastric juice- Pepsin, HCl, Mucous

The enzymes pepsin and trypsin are secreted respectively by

Liver and salivary gland

Salivary gland and stomach

Stomach and pancreas

Salivary glands are located in

Buccal cavity

Stomach

none of these

Plants absorbs Nitrogen from soil in form of

(B) Nitrite

(A) Nitrate

Rings of cartilage are found associated with

Bronchi

Trachea

Alveoli

Which gas is produced as a by product during the process of photosynthesis

CO2

hydrogen

Oxygen

Which of the following enzymes are present in pancreatic juice?

(B) Lipase

Both (A) and (B)

(A) Trypsin

Which of the following statement is true about stomata?

Stomatal pore is surrounded by kidney shaped guard cell

All of the above

Stomata helps in exchange of gases during photosynthesis

Select the set of organisms showing holozoic nutrition

Human, amoeba, bird

none of these

Amoeba, mushroom, human

Which of the following type of nutrition is shown by fungi?

Heterotrophic

Chemo autotrophic

Photo autotrophic

Which of the following animal will have shortest small intestine?

Goat

Human

Tiger

Diaphragm is a--

muscle

bone

blood cell

Which of the following pair is incorrect?

Humans - holozoic nutrition

Paramoecium - autotrophic nutrition

Yeast - saprophytic nutrition

During vigorous physical exercise, lactic acid is formed from glucose inside the muscle cells due to-

Lack of oxygen

Excess of carbon dioxide

None of these

Select the correct chemical formula of glucose

C6H12O6

C5H12O6

C6H12O5

By which life process living organisms such as humans remove nitrogenous waste from their blood

Excretion

Respiration

Nutrition

Which of the following respiratory organ is the site of exchange of gases in humans?

Bronchi

Alveoli

Pharynx

Human digestive system consist of a long hollow tube which starts from mouth and ends at anus. It is known as

Alimentary canal

Oesophagus

Digestive canal

The rhythmic contraction and relaxation of the walls of the food pipe is called

digestion

peristaltic movement

translocation

Which of the following events in the mouth cavity will be affected if salivary amylase is absent in the saliva?

Fats breaking down into fatty acids and glycerol.

Starch breaking down into sugars.

Proteins breaking down into amino acids.

Which of the following gas is majorly released by plants during day time?

Oxygen

Carbon dioxide

Nitorgen

Which of the following group of organisms derive nutrition from dead and decaying matter

Parasites

Herbivores

Saprotrophs

During inhalation, Diaphragm moves--

Upwards

Both

Downwards

Glycolysis process occurs in which part of the cell?

Cytoplasm

Chloroplast

Mitochondria

Which one of the following is known as energy currency of cell?

Adenosine triphosphate

Glucose

Pyruvate

Blue green algae is a type of---------

Heterotrophic animal

Photosynthetic bacteria

None of these

The correct sequence of anaerobic respiration in Yeast

glucose → pyruvate → ADP → lactic acid

glucose → pyruvate → carbon dioxide + ethanol + energy

Glucose → pyruvate → lactic acid

Breathing organs in fishes

Skin

Gills

Lungs

In amoeba, oxygen is taken up by:

Specialised tissues

Diffusion

Osmosis

Bile is stored in –

Gall bladder

Pancreas

Liver

Which of the following is an example of parasitic plant?

Palm tree

Cuscuta (Amar bel)

Money plant

Which of the following is the largest gland and also plays a major role in digestion

Pitutary gland

Pancreas

Liver

Which part of the alimentary canal absorbs the digested food?

Pancreas

Villi in Small intestine

Liver

Name the pores in a leaf through which respi-ratory exchange of gases takes place.

Carbohydrates in the humans are stored in the form of

Which digestive juice is secreted by stomach and what it contains?

The enzymes pepsin and trypsin are secreted respectively by

Salivary glands are located in

Plants absorbs Nitrogen from soil in form of

Rings of cartilage are found associated with

Which gas is produced as a by product during the process of photosynthesis

Which of the following enzymes are present in pancreatic juice?

Which of the following statement is true about stomata?

Select the set of organisms showing holozoic nutrition

Which of the following type of nutrition is shown by fungi?

Which of the following animal will have shortest small intestine?

Diaphragm is a--

Which of the following pair is incorrect?

During vigorous physical exercise, lactic acid is formed from glucose inside the muscle cells due to-

Select the correct chemical formula of glucose

By which life process living organisms such as humans remove nitrogenous waste from their blood

Which of the following respiratory organ is the site of exchange of gases in humans?

Human digestive system consist of a long hollow tube which starts from mouth and ends at anus. It is known as

The rhythmic contraction and relaxation of the walls of the food pipe is called

Which of the following events in the mouth cavity will be affected if salivary amylase is absent in the saliva?

Which of the following gas is majorly released by plants during day time?

Which of the following group of organisms derive nutrition from dead and decaying matter

During inhalation, Diaphragm moves--

Glycolysis process occurs in which part of the cell?

Which one of the following is known as energy currency of cell?

Blue green algae is a type of---------

The correct sequence of anaerobic respiration in Yeast

Breathing organs in fishes

In amoeba, oxygen is taken up by:

Bile is stored in –

Which of the following is an example of parasitic plant?

Which of the following is the largest gland and also plays a major role in digestion

Which part of the alimentary canal absorbs the digested food?

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