Fill in the blanks:
(a) The main steps of nutrition in humans are __________, __________,
__________, _________ and __________.
(b) The largest gland in the human body is __________.
(c) The stomach releases hydrochloric acid and ___________ juices which
act on food.
(d) The inner wall of the small intestine has many finger-like outgrowths
called _________.
(e) Amoeba digests its food in the ____________ .
A shirt with marked price Rs 800 was sold at Rs 680.
The rate of discount allowed on the shirt is
(a) 10% (b) 15% (c) 20% (d) 25%
Why do farmers grow many fruits and vegetable crops inside large green
houses? What are the advantages to the farmers?
Choose the correct option from the following:
Plants take carbon dioxide from the atmosphere mainly through their:
(i) roots (ii) stem (iii) flowers (iv) leaves
Choose the correct option from the following:
Which part of the plant takes in carbon dioxide from the air for
photosynthesis?
(i) Root hair (ii) Stomata (iii) Leaf veins (iv) Petals
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(i) Carbon dioxide is released during photosynthesis. (T/F)
(ii) Plants which synthesise their food are called saprotrophs. (T/F)
(iii) The product of photosynthesis is not a protein. (T/F)
(iv) Solar energy is converted into chemical energy during
photosynthesis. (T/F)
Match the items given in Column I with those in Column II:
Column I Column II
Chlorophyll. Rhizobium
Nitrogen Heterotrophs
Cuscuta. . Pitcher plant
Animals Leaf
Insects Parasite
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 (iv) pitcher plant (iv) rose
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