(a) What is common for Cuscuta, ticks and leeches ?

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Solution

The common feature in Cuscuta, ticks and leeches is their parasitic mode of nutrition i.e., they all take nutrition from other organisms (host) without killing them.

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Question 62
What is common for Cuscuta, ticks and leeches?

(a) What is common for Cuscuta, ticks and leeches?
(b) Name the substances on which the following enzymes act in the human digestive system :
(i) Trypsin (ii) Amylase (iii) Pepsin (iv) Lipase
(c) Why the absorption of digested food occurs mainly in the small intestine?

Q. Tick the correct answer:

(a) Cuscuta is an example of:

(i) autotroph

(ii) parasite

(iii) saprotroph

(iv) host

(b) The plant which traps and feeds on insects is:

(i) Cuscuta

(ii) china rose

(iii) pitcher plant

(iv) rose

Q. What is common for Cuscuta, ticks and leeches?