Tag: importance of plants

Questions Related to importance of plants

From what kind of tree is turpentine obtained?

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. From grasses only

  2. From most trees

  3. Most kinds of pine trees

  4. From oil wells

Show answer
Correct Option: C
Explanation:

Turpentine oil is made from the resin of certain pine trees. It is used as medicine. Don't confuse turpentine oil with gum turpentine, which is the resin. Turpentine oil is applied to the skin for joint pain, muscle pain, nerve pain, and toothaches. So, the correct option is "C" (Most kinds of pine trees).

The surface fibres of commercial use are obtained from

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. Gossypium

  2. Agave

  3. Helianthus

  4. Solanum

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Correct Option: A
Explanation:

Surface fibers are fibers found on the covering of seeds, leaves, or fruits; cotton cloth is made from seed hairs covering the surface of cotton seeds. Gossypium is a genus  of 39-40 species of shrubs in the mallow family, Malvaceae. It is native to the tropical and subtropical regions of both the 'Old World'  and the 'New World'. The cotton plants, sources of commercial cotton fabric, are included in this genus. 

Chilgozas, the common dry fruit eaten in many Indian families, are the seeds of a

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. Tree fern

  2. Anigosperm

  3. Pine

  4. Daisy plant

Show answer
Correct Option: C
Explanation:

Chilgoza pine (Pinus gerardiana) is well known for its edible pine nuts, rich in carbohydrates and protein . The seeds are locally called and marketed as "chilgoza".

So, the correct option is C. (pine)

Sago-grains are chiefly obtained from

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. Ginkgo biloba

  2. Pinus gerardiana

  3. Cycas revoluta

  4. Cedrus deodar

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Correct Option: C

A. Heterospory
B. Seed formation
C.Fertilization process
What is appropriate for gymnosperms?

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. AB true C false

  2. BC true A false

  3. ABC all true

  4. ABC all false

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Correct Option: C
Explanation:

Heterospory, seed formation and fertilization are found in gymnosperm. 

A gymnosperm grown for its appearance is

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. Pinus

  2. Picea

  3. Araucaria

  4. Cedrus

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Correct Option: C

Sago comes from

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. Calamus rotung

  2. Metroxylon rumphii

  3. Areca catechu

  4. Phoenix dactylifera

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Correct Option: B
Explanation:

Monospory means having tetranucleate or simple spores while tetraspory is the formation of four haploid spores after meiosis.

So the correct option is B.

Rosin and turpentine are obtained from

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. Cycas

  2. Pinus

  3. Cedrus

  4. Abies

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Correct Option: B

Which is obtained from gymnosperm plant?

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. Cashewnut

  2. Almond

  3. Chilgoza

  4. Pistachio

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Correct Option: C

Which one of the following statements is not correct?

biology plants in daily life uses of gymnosperms introduction to gymnosperms importance of plants

  1. The seeds of some gymnosperms have no endosperm

  2. Air-current is the only pollinating, agent in gymnosperms

  3. In the lower gymnosperms, the male gametes are in the nature of ciliated spermatids

  4. Some gymnospermis have both tracheids and vessels in their zylem

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Correct Option: A