10th Standard CBSE - Science - Life Process

Buy 10th Science MCQ Online Test CBSE Practice test pack

Question - 1

The kidneys in human beings are a part of the system for

  • A Nutrition
  • B Respiration
  • C Excretion
  • D Transportation

Question - 2

The xylem in plants is responsible for

  • A Transport of water
  • B Transport of food
  • C Transport of amino acids
  • D Transport of oxygen

Question - 3

The autotrophic mode of nutrition requires

  • A Carbon dioxide and water
  • B Chlorophyll
  • C Sunlight
  • D All of the above

Question - 4

The breakdown of pyruvate to give carbon dioxide, water and energy takes place in

  • A Cytoplasm
  • B Mitochondria
  • C Chloroplast
  • D Nucleus

Question - 5

Which of the following statements about the autotrophs is incorrect?

  • A They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll
  • B They store carbohydrates in the form of starch
  • C They convert carbon dioxide and water into carbohydrates in the absence of sunlight
  • D They constitute the first trophic level in food chains

Question - 6

In which of the following groups of organisms, food material is broken down outside the body and absorbed?

  • A Mushroom, green plants, Amoeba
  • B Yeast, mushroom, bread mould
  • C Paramecium, Amoeba, Cuscuta
  • D Cuscuta, lice, tapeworm                     

Question - 7

 Select the correct statement

  • A Heterotrophs do not synthesise their own food
  • B Heterotrophs utilise solar energy for photosynthesis
  • C Heterotrophs synthesise their own food
  • D Heterotrophs are capable of converting carbon dioxide and water into carbohydrates

Question - 8

Which is the correct sequence of parts in human alimentary canal?

  • A Mouth \(\longrightarrow\)Stomach\(\longrightarrow\)Small intestine \(\longrightarrow\) Oesophagus \(\longrightarrow\) large intestine
  • B Mouth \(\longrightarrow\) oesophagus \(\longrightarrow\) stomach \(\longrightarrow\) large intestine \(\longrightarrow\) small intestine
  • C Mouth \(\longrightarrow\) stomach \(\longrightarrow\) oesophagus \(\longrightarrow\) small intestine \(\longrightarrow\) large intestine
  • D Mouth \(\longrightarrow\) oesophagus \(\longrightarrow\) stomach \(\longrightarrow\)small intestine \(\longrightarrow\) large intestine

Question - 9

In salivary amylase is lacking in the saliva which of the following events in the mouth cavity will be affected?

  • A Proteins breaking down into amino acids
  • B Starch breaking down into sugars
  • C Fats breaking down into fatty acids and glycerol
  • D Absorption of vitamins

Question - 10

The inner lining of stomach is protected by one of the following from hydrochloric acid. Choose the correct one.

  • A Pepsin
  • B Mucus
  • C Salivary amylase
  • D Oesophagus