WORKSHEET 1
CLASS: VII
SUBJECT :SCIENCE
CHAPTER : NUTRITION IN PLANTS
I.MULTIPLE CHOISE QUESTIONS
1.Which one of the following is an autotrophic plant?
a. cuscuta b. mushroom c. sunflower d. bread mould
2. Symbiotic relationship between an algae and fungus is
found in
a. Pitcher plant b. lichen c. mushroom d. cuscuta
3. Plants that live on rooting food are
a. Parasite b. insectivores c. saprophytes d. symbionts
4. Green plants take in carbon dioxide from the air through
a. Root hairs b. flower
II.
c. stem d. stomata
Fill in the blanks
1.
2.
3.
4.
Organisms capable of making their own food
are called ------------.
The green pigments on chloroplasts are ------------------ are the pores on the under surface
of green leaves
Two organisms living together for the benefit
of one another are -----------------
5.
6.
---------------- is the first food product of
photosynthesis
------------ is the substance that traps solar
energy in green plants for photosynthesis
III. 2 mark questions
1. Fungus is not able to synthesis their own
food. Why?
2. Green insectivorous plants feed on insects.
Why?
3. How do rhizobium bacteria helps in enriching
soil?
4. Give two methods to increase nutrients in the
soil.
IV. 3 marks question
1. Briefly explain the process of photosynthesis
2. How can we test the presence of starch on
leaves
V. 5 marks question
1. Define the following terms
a. Autotrophs b. heterotrophs c. parasites
d. saprotrophs e. symbiotic relationship
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Work sheet 2
Chapter 2: NUTRITION IN ANIMALS.
I. Multiple choice questions
1.Which of the following functions is not performed by
tongue.
A) taste b) smell c) mixing food with saliva
d) speech
2. Absorption of digested food takes place in
a) esophagus b) stomach c) small intestine d) large
intestine
3) Villi, the finger like projections are present in
a) stomach b) large intestine c) esophagus d) small
intestine
4) Absorption of excess water from assimilated food
takes place in
a) small intestine b) large intestine c) rectum d) stomach
II. FILL IN THE BLANKS
1)
Is the method of intake of food in animals .
2) Animals that chew the cud are called as
3)
helps conversion of starch into sugar.
.
4)
intestine.
increases the food absorbing surface in the
5)
is the intake of digested food in the blood
and its use for growth and life activities.
6) Amoeba takes in food with the help of
7) Bile juice is produced in
.
.
III. 2 marks question
1) What is the function of
a) Incisors b) canines c) pre molar and molar
2) How is nutrition in amoeba different from
nutrition in man?
3) How do we distinguish between a ruminant and
non ruminant cattle?
4) What role is played by bile in digestion of food?
5) What is the role of villi present in the small
intestine?
6) Cellulose is digested by ruminants but not digested
by human-why?
IV. 3 marks question
1) Briefly explain the process of digestion in grass
eating animals with a neat labeled diagram.
2) With help of a neat labelled diagram explain the
process of digestion in amoeba.
3) Name the digestive juice which acts on
a)carbohydrate b) proteins c) fats
also name the part of the digestive system where
the digestion of these components are completed.
V. 5 marks question
1)Draw a neat labeled diagram of digestive system
in humans.
2) define the following terms
a) ingestion b) digestion c) absorption d) egestion
3) name the digestive juice which mixes the food
in the
a) mouth b) stomach c) small intestine.
Also mention the action of digestive juice.