ICSE Living Science Biology for Class 6 Solutions Chapter 9 Some useful plants and animals
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Fill in the blanks.
Question 1.
Oxygen needed by us for respiration is released by plants during …………
Answer:
Oxygen needed by us for respiration is released by plants dur¬ing photosynthesis.
Question 2.
Plants like sugarcane and ………….. provide sugar.
Answer:
Plants like sugarcane and beetroot provide sugar.
Question 3.
Wool is obtained by …………… which means shaving off the hair of sheep.
Answer:
Wool is obtained by shearing which means slaving off the hair of sheep.
Question 4.
The caterpillars that produce silk thread are also called …………..
Answer:
The caterpillars that produce silk thread are also called silk-worms.
Question 5.
A …………. is also called ship of the desert.
Answer:
A camel is also called ship of the desert.
A. Tick the most appropriate answer.
Question 1.
Which of the following helps in the fermentation ?
a. Yeast
b. Honeybee
c. Silk moth
d. Pig
Answer:
a. Yeast
Question 2.
Tea leaves, coffee beans and cocoa seeds are used for preparing –
a. medicines
b. beverages
c. spieces
d. pickles
Answer:
b. beverages
Question 3.
The breeding and rearing of fish is called –
a. sericulture
b. agriculture
c. shearing
d. pisciculture
Answer:
d. pisciculture
Question 4.
Which of the following is an antibiotic ?
a. Gossypium
b. Penicillin
c. Jute
d. Cotton
Answer:
b. Penicillin
Question 5.
Which of the following is not a plant product ?
a. Rubber
b. Wool
c. Teak
d. Jute
Answer:
b. Wool
B. Fill in the blanks.
Question 1.
……………. is used for making furniture.
Answer:
Timber is used for making furniture.
Question 2.
………….. like penicillin are made from some fungi.
Answer:
Antibiotics like penicillin are made from some fungi.
Question 3.
The rearing and management of pigs is called ………….
Answer:
The rearing and management of pigs is called piggery.
Question 4.
The management of honeybees for commercial purpose is called …………
Answer:
The management of honeybees for commercial purpose is called apiculture.
Question 5.
The rearing of silkworms to produce silk thread is called
Answer:
The rearing of silkworms to produce silk thread is called seri-culture.
C. State if the following statements are true or false. Cor¬rect the statement if it is false.
Question 1.
We eat the leaves of mint.
Answer:
True
Question 2.
We eat the fleshy leaves and stem of onion.
Answer:
True
Question 3.
Paper is made from plants like banyan and mango
Answer:
False. Paper is made from plants like bamboo and grass.
Question 4.
Flax is obtained from the stem of Linum.
Answer:
True
D. Find the odd one out. Give reasons.
Question 1.
tea, coffee, cocoa, milk
Answer:
Milk is the odd one out as it is provided by animals whereas the rest three are beverages obtained from plants.
Question 2.
Eucalyptus, neem, clove, tulsi
Answer:
Clove is the odd one out as it is a spice obtained from plants while the rest three are medicinal plants.
Question 3.
neem plant, jute plant, cotton plant, Linum plant
Answer:
Neem plant is the odd one out as it is a medicinal plant white the rest three are plants that provide fibre to us.
Question 4.
sardine, catla, singhi, rohu
Answer:
Sardine is the odd one out as it is a marine fish white the rest are freshwater fishes.
E. Answer the following in short.
Question 1.
What are antibiotics ?
Answer:
Antibiotics are chemical substances derived from fungi, bacteria and other organisms, that inhibit the growth and destroy microorganisms causing infections. Example – penicillin is an antibiotic obtained from fungus Penicillium.
Question 2.
What is piggery ?
Answer:
The rearing and mangaement of pigs is called piggery.
Question 3.
Name three plant fibres.
Answer:
- Cotton [obtained from the seed hair of Gossypium (cotton plant)]
- Jute [obtained from the stem of Corchorus (jute plant)]
- Flax [obtained from the stem of Linum\.
Question 4.
Name the vitamins obtained from liver oil of fish.
Answer:
Liver oil of fish is a rich source of vitamin A, D and E.
F. Answer the following in detail.
Question 1.
What is poutry farming ? Name any three poultry birds.
Answer:
The practice of keeping and breeding the poultry birds for their eggs and meat is called poultry farming. Hens, ducks, geese
and turkey are poultry birds.
Question 2.
Differentiate between apiculture, sericulture and pisci-culture.
Answer:
Apiculture – The rearing of honeybees for commercial pur-poses is called apiculture.
Sericulture – The rearing of silkworms to produce silk thread is called sericulture.
The production and management of fish is called as pisciculture.
Question 3.
List five products each that we get from plants and ani-mals. Also name the plant or animal that is a source of that product.
Answer:
Products that we get from plants:
- Paper (obtained from bamboo and grass)
- Sugar (obtained from sugarcane and beetroot)
- Edible oil (obtained from mustard, groundnut, etc).
- Antiseptic – (from plants like neem, tulsi)
- Cotton fibre (obtained from seed hair of cotton plant, Gossypium).
Products that we get from animals :
- Milk (from cattle like cow, buffalo)
- Eggs (from poultry birds like ducks, hens)
- Honey (from honeybees)
- Wool (from sheep and goats)
- Silk (from silk moth or Bombyx mori)
Question 4.
Where is silk obtained from ? Describe the process. Also name the states in India that produce silk.
Answer:
Silk is obtained from an insect called the silk moth or Bombyx mori. A female silk moth lays eggs which transform into worm-like larvae called caterpillars or silkworms. They feed on mulberry leaves and have silk glands with the help of which they secrete the silk thread and weave protective structure around its body called the cocoon. In silk forms, the thread is carefully unwound from the cocoon and treated with chemicals to obtain silk yam. The yam is then woven into silk fabric. In India, sericulture centres are located in Assam, Madhya Pradesh, Karnataka, West Bengal, Andhra Pradesh, Tamil Nadu and Kashmir.
G. Various stages of the life cycle of silk moth are numbered a to d.
Question 1.
Write the names of the stages a to d.
Answer:
Answer:
a → egg
b → adult
c → pupa
d → larva
Question 2.
Silk is obtained from which of the four stages ?
Answer:
larva (called caterpillar or silkworm)
Question 3.
What is rearing of silk moth called ?
Answer:
Sericulture
Living Science Biology Class 6 ICSE Solutions