CBSE Class 10 Science Practical Based MCQs

Question. The diagram given below is the experimental set-up to show that carbon dioxide is given out during respiration. In this set-up what does the test tube marked (X) contain?

(a) Water
(b) Lime water
(c) Potassium hydroxide
(d) Hydrochloric acid

Answer: C

Question. In the experimental set-up, KOH solution has been kept in the flask to:

(a) react with water to generate oxygen.
(b) create a dry atmosphere for wet germinating seeds.
(c) absorb carbon dioxide so as to create a partial vacuum.
(d) remove impurities present in the air in the flask.

Answer: C

Question. In an airtight experimental set-up which was used by you in the laboratory to study respiration in germinating seeds, the seeds obtained the oxygen for respiration from:
(a) air in the flask
(b) water in the beaker
(c) water in the germinating seeds
(d) water used for soaking the seed

Answer: A

Question. Which of the following is not a feature of asexual reproduction?
(a) Two individuals of different sexes involved.
(b) No meiosis occurs.
(c) New individuals are genetically identical to the parents. .
(d) Offsprings are clones of parents.

Answer: A

Question. Name the cell components required for completion of aerobic respiration in a cell.
(a) Chloroplast and nucleus
(b) Ribosomes and ER
(c) Golgi body and lysosomes
(d) Cytoplasm and mitochondria

Answer: D

Question. The following figures illustrate binary fission in Amoeba in an incorrect sequence.

The correct sequence is:
(a) (i), (iii), (iv), (ii)
(b) (ii), (iii), (iv), (i)
(c) (iv), (iii), (ii), (i)
(d) (iii), (iv), (ii), (i)

Answer: B

Question. The type of respiration shown by the germinating seeds to release carbon dioxide is:
(a) Anaerobic respiration
(b) Aerobic respiration
(c) oxidative phosphorylation
(d) Incomplete oxidation

Answer: B

Question. Mention the sequence of budding in hydra:

Correct sequence is
(a) A, B, C, D
(b) A, D, B, C
(c) C, A, B, D
(d) D, A, B, C

Answer: A

Question. A chain of yeast cells are formed because:
(a) yeast cells do not separate after budding*
(b) daughter cells are unable to survive without parent cells
(c) buds reproduce as soon as they are formed
(d) daughter cells stick together with the help of mucus

Answer: A

Question. The seeds used in experiment to show that carbon dioxide is given out during respiration are:
a) dry seeds
b) boiled seeds
c) crushed seeds
d) germinating seeds

Answer: D

Question. Which of the following substance is used to make all connections air tight in the experiment to show that carbon dioxide is produced during respiration:
(a) oil
(b) Vaseline
(c) ghee
(d) wax

Answer: B

Question. Out of the following diagrams which one depicts a stage in binary fission of Amoeba?

(a) A
(b) B
(c) C
(d) D

Answer: D

Question. After observing the prepared slides of binary fission in Amoeba and budding in yeast, the following observations were reported:
a. Single cells of Amoeba and Yeast were undergoing binary fission and budding respective
b. Cytokinesis was observed in the Yeast cell.
c. Elongated nucleus was dividing to form two daughter nuclei in Amoeba.
d. A chain of buds were observed due to reproduction in Amoeba. The correct observation(s) is/are:
(a) d, a and c
(b) c and d
(c) b only
(d) a and c

Answer: D

Question. Out of the four experimental set-ups shown below, which one will demonstrate the evolution of carbon dioxide during respiration of germinating seeds:

(a) A
(b) B
(c) C
(d) D

Answer: D

Question. A student is to conduct an experiment to show CO₂ is released during respiration. List two precautions that he/she must take for obtaining correct observation.
Answer: Two precautions to be taken are:
(i) Germinating seeds (living) should be used.
(ii) The experiment set up must be air-tight.

Question. Students were asked to observe the permanent slides showing different stages of budding in yeast under high power of a microscope.
(a) Which adjustment screw (coarse/fine) were you asked to move to focus the slides?
(b) Draw three diagrams in correct sequence showing budding in yeast.
Answer: (a) A fine screw is used to focus the slides of budding in yeast under high power of a microscope.
(b) Sequence showing budding in yeast:

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