Which one of the following is suitable for Koeppen’s “A” type of climate?
(a) High rainfall in all the months
(b) Mean monthly temperature of the coldest month more than freezing
point
(c) Mean monthly temperature of all the months more than 18o C
(d) Average temperature for all the months below 10° C
Mark the following statements as True or False. If false, write
the correct statements.
(a) Tongue is attached to the roof of the mouth cavity at the
back.
(b) The large intestine is longer and wider than the small
intestine of the human alimentary canal.
(c) Mucus protects the stomach lining from damage.
(d) All heterotrophs have a similar basic process of nutrition
Name the parts of the alimentary canal where
(i) water gets absorbed from undigested food.
(ii) digested food gets absorbed.
(iii) taste of the food is perceived.
(iv) bile juice is produced.
Cellulose-rich food substances are good source of roughage in
human beings because
(a) human beings do not have cellulose-digesting enzymes.
(b) cellulose gets absorbed in the human blood and converts into fibres.
(c) the cellulose-digesting bacteria convert cellulose into fibres.
(d) cellulose breaks down into smaller components which are egested as roughage.
Choose the correct order of terms that describes the process of
nutrition in ruminants.
(a) swallowing → partial digestion → chewing of cud →
complete digestion
(b) chewing of cud → swallowing → partial digestion →
complete digestion
(c) chewing of cud → swallowing → mixing with digestive
juices → digestion
(d) swallowing → chewing and mixing → partial digestion
→ complete digestion
Cud is the name given to the food of ruminants which is
(a) swallowed and undigested.
(b) swallowed and partially digested.
(c) properly chewed and partially digested.
(d) properly chewed and completely digested.
What are forms of condensation? Describe the process of dew and frost
formation.
The enzymes present in the saliva convert
(a) fats into fatty acids and glycerol.
(b) starch into simple sugars.
(c) proteins into amino acids.
(d) complex sugars into simple sugars.
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