Name a unicellular animal which uses cilia to move food particles into its mouth.

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Solution

Paramecium uses cilia to move food particles into its mouth.

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A unicellular animal P having no fixed shape ingests a food particle by forming temporary finger-like projections Q. The food particle is engulfed with a little surrounding water to form a temporary stomach R inside it. The chemicals S from surrounding cytoplasm enter into R and break down food into small and soluble molecules by chemical reactions. The digested food is absorbed directly into the cytoplasm by the process T. The undigested food is thrown out of the body by the rupture of a cell organelle U in a process called V.
(a) Name the unicellular animal P.
(b) What are (i) Q and (ii) R?
(c) Name (i) chemical S, and (ii) process T.
(d) Name (i) organelle U, and (ii) process V.

Q. Which of the following statements are correct?
(i) Hydra has a number of cilia around its mouth.
(ii) Frog uses its long, sticky tongue to catch insects
(iii) Mosquito sucks up the blood of animals with its tentacle.

Q. Question 1
Choose the correct statement with respect to unicellular organisms:

(a) in unicellular organisms, tissues work in co-ordination to perform different functions.
(b) unicellular organisms do not require food.
(c) unicellular organisms respire and reproduce.
(d) all unicellular organisms move by cilia.

Name the causative micro-organisms of the following animal diseases :

(a) Food and mouth disease (b) Anthrax

Q. Name an animal which moves by using its large, disc-type foot.

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