Tag: uses of angiosperms

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

Which of the following groups of characteristics is applicable to the timber obtained from Sal(Shorea)?

  1. Strong, durable, moderately heavy, takes good polish

  2. Strong, durable, heavy, does not take good polish

  3. Strong, durable, heavy. takes good polish

  4. Not strong, durable if not exposed, light, does not take good polish
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sal (Shorea robusta) timber is known for being strong, durable, heavy, and taking a good polish.

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

Match List I with List II and select the correct answer using the codes below the lists:

List-I(Timber) List-II(Country)
A. Cedar 1. Myanmar
B. Douglas Fir 2. Canada
C. Mahogany 3. Mexico
D. Teak 4. Honduras

  1. A - 2, B - 3, C - 4, D - 1

  2. A - 3, B - 2, C - 4, D - 1

  3. A - 3, B - 2, C - 1, D - 4

  4. A - 2, B - 3, C - 1, D - 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
 Cedar  Mexico
 Douglas Fir  Canada
 Mahogany  Honduras
 Teak  Myanmar

So, the correct option is 'A - 3, B - 2, C - 4, D - 1'.

Multiple choice biology plants in daily life uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

The Botanical name of ''indian rai''

  1. Brassica campestris

  2. B. juncea

  3. B. nigra

  4. B. alba
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Brassica juncea, commonly known as Indian Rye or Indian mustard is a species of a mustard plant. Brassica species flowers are complete, bisexual, i.e., with functional male (androecium) and female (gynoecium), including stamens, carpels and ovary. Pollination is entomophilous i.e., by insects, or cleistogamy i.e., by self or allogamy i.e., by cross-pollination. 

So, the correct answer is 'B.juncea'

Multiple choice biology plants in daily life uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

Jute fibre deteriorates quickly due to presence of

  1. High cellulose

  2. Low cellulose

  3. High lignin

  4. Low lignin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Jute fiber is a lignocellulosic fiber. High lignin content makes the fiber more resistant to degradation, but in the context of commercial processing and quality, high lignin content is often associated with lower flexibility and faster deterioration under certain environmental conditions compared to pure cellulose fibers.

Multiple choice biology plants in daily life uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

The cotton thread fibres are

  1. Fibres taken out from stem

  2. Epidermal hairs of seeds

  3. Epidermal hairs of fruits

  4. Fibres taken out from roots
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cotton fibers are single-celled, elongated structures that grow from the surface of the seeds of the cotton plant. They are botanically classified as epidermal hairs.

Multiple choice biology plants in daily life uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

Which of the following crop is most important for human

  1. Barley

  2. Wheat

  3. Cotton

  4. Millet
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wheat is the most widely grown crop in the world and provides 20% of the daily protein and of the food calories for 4.5 billion people. It is the second most important food crop in the developing world after rice. The most planted crops throughout the world are wheat and maize (corn). 

So, the correct answer is 'Wheat'