Tag: importance of plants

Questions Related to importance of plants

The plant whose seeds yield safflower and the petals an orange dye is


biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Calendula officinalis

  2. Helianthus annuus

  3. Rauwolfia serpentine

  4. Carthamus tinctorius

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Correct Option: D
Explanation:

Safflower (Carthamus tinctorius) is a highly branched herbaceous annual plant which is commercially cultivated for vegetable oil. The dried florets of safflower produces red to orange-red dye (known as carthamin).

So the correct option is D.

Bhojpatra is derived from

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Bark of Cinchona

  2. Bark of Dalbergia

  3. Bark of Betula utillis

  4. Leaves of Piper

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Correct Option: C
Explanation:

Betula utilis is a birch tree of Himalayas that grows upto 4,500 m (14,800 ft). The white, paper-like bark of the tree called bhojpatra was used for writing Sanskrit scriptures and texts.

So the correct option is C.

Germinating barley seeds are used in preparation of

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Cheese

  2. Wine

  3. Beer

  4. Lactic acid

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Correct Option: C
Explanation:

Barley seeds are germination to produce beer through fermentation.

So the correct option is C.

Which part of the plant Eugenia aromatica do we use (in the form of cloves) as an aromatic spice

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Dried fruit

  2. Dried and roasted seed

  3. Unopened dried flower bud

  4. Dried leaf

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Correct Option: C
Explanation:

Cloves are the unopened dried flower buds of the species Syzygium aromaticum.

So the correct option is C.

Which of the following provides 3 important ingredients of our food namely carbohydrates, fats and proteins

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Ground nut

  2. Gram

  3. Castor

  4. Mango

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Correct Option: A
Explanation:

Groundnut is low in carbohydrates and high in protein, fat, and fiber.

So the correct option is A.

A fibre of greatest commercial importance is derived from epidermis of seeds or outside the seed coat is

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Flax

  2. Coir

  3. Cotton

  4. Hemp

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Correct Option: C
Explanation:

Cotton fibres (Gossypium) are the outgrowth of the epidermis. These are the epidermal cells and they become elongated.

So the correct option is C.

Assertion : Theine cause bitterness and astringency of tea leaves.

Reason : The flavour of tea is due to the ethereal oil.


biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

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Correct Option: E
Explanation:

Theine is the element that is responsible for the stimulating and refreshing qualities of the tea. The bitterness and astringency of the leaves are due to the presence of tannins. 

The aroma and flavour of the tea are due to the presence of the ethereal oil.

The plant which is used as a source of spice as well as dye is

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Turmeric

  2. Cardamom

  3. Clove

  4. Indigofera

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Correct Option: A
Explanation:

Turmeric and Indigofera are used as dyes. In these only turmeric is used as spice whereas Indigofera is not used for cooking purposes.

So the correct option is A.

Rat poison is obtained from

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Urginea

  2. Lilium

  3. Asparagus

  4. Aloe vera

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Correct Option: A
Explanation:

Red squill is obtained in the powder form from a plant Urginea maritima. It is used as a rodenticide and it is the commonly used rat poison.

So the correct option is A.

One of the group of fibre yielding plants of economic importance is

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Gossypium, Hibiscus, Crotalaria, Cannabis

  2. Gossypium, Cassia, Lycopersicum

  3. Gossypium, Brassica, Glycine

  4. Gossypium, Agave. Nicotiana

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Correct Option: A
Explanation:

Some of the fibre yielding species from the different world centres are Abutilon theophrastii, Cannabis sativa ( Chinese centre), Musa textilis (South East Asian centre), Corchorus capsularis, Crotalaria juncea, Hibiscus cannabis (Hindustani centre), Agava sisalana, Gossypium hirsutum (South American centre).