Page 85 - CT&AI_CLasa_7_Part_1

9. During a science experiment, Priya and her 10. Ankur imagined a situation where X were
friends were testing how saliva breaks down absent in the lungs. What would be the most
starch using two test tubes. They followed all immediate effect? (Abstract Thinking)
the steps carefully, but after completing the X
experiment, they noticed no colour change in
either test tube. Priya was confused and asked
her friends what might have gone wrong.
• Sameer: “Maybe the iodine solution was
not added.”

• Riya: “Both test tubes should turn blue
anyway.”
• Arun: The rice must have dissolved Blood vessel
completely."
• Meenu: “Saliva must have stopped (a) Digestion will stop.
working.”
(b) Oxygen will not enter the
Who correctly identified the mistake in the bloodstream.
experiment? (Decomposition)
(c) Food will not be absorbed.
(a) Sameer (b) Riya
(d) Bones will become weak.
(c) Arun (d) Meenu

A student studies an unknown animal’s digestion process and records the
following steps:
• Step 1: The animal swallows grass quickly with very little chewing.
• Step 2: Food enters a large stomach chamber where microbes begin to
break down cellulose.
• Step 3: Partially digested food is brought back to the mouth and chewed again.
• Step 4: Food passes through multiple stomach chambers for further digestion
and absorption.
What is the best conclusion?

(a) It is a carnivore because digestion starts in the stomach.

(b) It is a ruminant because it shows rumination and a multi-chambered
stomach.

(c) It is a human because digestion involves chewing.

(d) It is a non-herbivore because cellulose is not digested.

Life Processes in Animals 83