Tag: biology

Questions Related to biology

Which is not included in Poaceae family

  1. Paddy

  2. Wheat

  3. Grasses

  4. Mustard


Correct Option: D
Explanation:
  • Poaceae or Gramineae is a large and nearly ubiquitous family of monocotyledonous flowering plants known as grasses. Poaceae includes the cereal grasses such as paddy, wheat, rice; bamboos and the grasses of natural grassland and cultivated lawns and pasture.
  • The mustard plant is a plant species in the genera Brassica and Sinapis belonging to the family Brassicaceae.
  • So, the correct answer is 'Mustard'

A graminaceous spikelet is surrounded by

  1. Two scales called glumes

  2. Two scales called lemma and pale

  3. Two scales called lodicules

  4. None of the above


Correct Option: A
Explanation:

In graminaceous spikelet or spikelet inflorescence of Poaceae, there is a pair of sterile glumes at the base of the spikelet. The lower, outer glume is called the first glume and the upper, inner glume is called the second glume. Just above the glumes, spikelets are present which are partly enclosed by glumes. Spikelets are characteristic of the grass family.

So, the correct answer is 'Two scales called glumes'.

The family which yields cereals is

  1. Poaceae

  2. Fabaceae

  3. Liliaceae

  4. Asteraceae


Correct Option: A
Explanation:

Poaceae or Gramineae is a large family of monocotyledonous flowering plants which are collectively known as grasses. Poaceae includes cereals, bamboos and the grasses of natural grasslands. The Poaceae are the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, rice, barley, millet etc.

So, the correct answer is 'Poaceae'.

Bamboos belong to family

  1. Liliaceae

  2. Poaceae

  3. Palmaceae

  4. Asteraceae


Correct Option: B
Explanation:

Poaceae or Gramineae is a large family of monocotyledonous flowering plants which are collectively referred to as grasses. It includes bamboos, cereals, grasses of natural grassland etc. It is an economically important plant family, providing cereals such as maize, wheat etc. Bamboo which is used as a building material belongs to the family Poaceae.

So, the correct answer is 'Poaceae'.

Poaceae was formerly called

  1. Compositae

  2. Cruciferae

  3. Papilionaceae

  4. Gramineae


Correct Option: D
Explanation:

Poaceae, formerly called as Gramineae because it includes grasses. It is a large family of monocotyledonous flowering plants. Poaceae includes cereals, bamboos and grasses of natural grassland. It is an economically important family of plants, providing staple foods from domesticated cereal crops such as maize, wheat, barley etc. 

So, the correct answer is 'Gramineae'.

Peculiarity of pistil of Poaceae is

  1. Two stigmas borne directly over ovary

  2. Three stigmas borne over ovary directly

  3. One stigma borne directly over ovary

  4. Three styles borne over ovary


Correct Option: A
Explanation:

A pistil may consist of carpels, ovary, style, stigma, carpels may join together with a single ovary. Poaceae is a large family of monocotyledonous flowering plants which are collectively referred to as grasses. In Poaceae, the stigmas are 2 which are usually feathery and they are borne directly over an ovary. This is the peculiar feature of the pistil in Poaceae.

So, the correct answer is 'Two stigmas borne directly over ovary'.

Fruit is caryopsis in

  1. Asteraceae

  2. Poaceae

  3. Fabaceae

  4. Liliaceae


Correct Option: B
Explanation:

Caryopsis is a dry one-seeded fruit in which the ovary wall is united with the seed coat and fused into a single unit. It is a type of simple dry fruit which is monocarpellate (formed from a single carpel), indehiscent (not opening at maturity). The caryopsis is commonly called grain and caryopsis fruit is characteristic of family Poaceae.

So, the correct answer is 'Poaceae'.

Stem is culm in

  1. Bamboo

  2. Grass

  3. Both A and B

  4. Sunflower


Correct Option: C
Explanation:

A culm is the areal jointed stem (above ground) of grass or bamboo. Typically, the culms are hollow but some species of bamboo have solid culms. In members of Poaceae family, the stem is underground rhizome in all perennial grasses, cylindrical, culm with conspicuous nodes and internodes, internodes hollow, herbaceous or woody, glabrous or glaucous, vegetative shoots are arising from the base of aerial stem or from underground stems.

So, the correct answer is 'Both A and B'.

Gynoecium of Poaceae is

  1. Bicarpellary syncarpous

  2. Tricarpallary syncarpous

  3. Monocarpellary

  4. Tricarpellary apocarpous


Correct Option: C
Explanation:

Poaceae or Gramineae is a large family of monocotyledonous flowering plants which are collectively referred to as grasses. In Poaceae, the gynoecium is monocarpellary, ovary superior, unilocular with a single ovule, basal placentation, style short, stigma (usually 2 )feathery, papillate or branched.

So, the correct answer is 'Monocarpellary'.

Russian Millet, Digitaria, is grown in

  1. Bihar

  2. Rajasthan

  3. Meghalaya

  4. None of the above


Correct Option: B
Explanation:

Russian millet, Digitaria is the genus of plants belonging to family Poaceae or Gramineae. It is native to tropical and warm temperate regions. Digitariaoccursies occur in tropical, subtropical and temperate regions of both the hemispheres. The major Russian millet producing state in India is Rajasthan, followed by Maharashtra, Haryana, Gujarat and Uttar Pradesh.

So, the correct answer is 'Rajasthan'.