Tag: adaptation in plants

Questions Related to adaptation in plants

Monocot root differs from dicot root in having

biology classification of plants importance and classification of angiosperms plant adaptation adaptation in plants

  1. No vascular bundles

  2. Well developed pith

  3. Radially arranged vascular bundles

  4. Open vascular bundles

Show answer
Correct Option: B
Explanation:

In dicot root, well developed pith is absent. In monocot root, well developed pith is present. In dicot roots, open vascular bundles are present which are radially arranged. 

Therefore, the correct answer is option B.

Plants whose seeds have more than one seed leaf (cotyledon) are 

biology classification of plants importance and classification of angiosperms plant adaptation adaptation in plants

  1. Ferns

  2. Dicots

  3. Monocots

  4. Moss

Show answer
Correct Option: B
Explanation:
On the basis of the number of cotyledons angiosperms are divided into monocots (having one cotyledon) and dicots (having 2 cotyledons). 
General characteristics of dicot.
  • They are two seeded plants.
  • The leaves of dicotyledons have veins in a network.
  • Dicotyledon seeds also contain an embryonic plant.
  • The flowers of dicotyledons have petals and other parts of the flower are arranged in four or five or six. It may contain flowers with four petals, flowers with five petals, flowers have six petals and the stamens also follow this pattern.
  • The seed is protected by a seed coat. For example, trees, sunflower, rose, etc.

Both a dicot root and monocot root possess six vascular bundles. The two can be distinguished by.

biology classification of plants importance and classification of angiosperms plant adaptation adaptation in plants

  1. Presence of lysigenous cavity in monocot root

  2. Occurrence of more metaxylem vessels in dicot root

  3. Presence of exarch condition in monocot root

  4. Outline of vessels

Show answer
Correct Option: D
Explanation:

Dicot root and monocot root differ on the activity of pericycle, a number of vascular bundles and the presence of medulla. In both dicot root and monocot root, six vascular bundles are present, they distinguished by thickness of cell walls or outlines of vessels.

So, the correct option is ‘Outlines of vessels’.

Monocot root differs from dicot root in having.

biology classification of plants importance and classification of angiosperms plant adaptation adaptation in plants

  1. Open vascular bundles

  2. Scattered vascular bundles

  3. Well developed pith

  4. Radially arranged vascular bundles

Show answer
Correct Option: C
Explanation:

Dicot root and monocot root differ on the activity of pericycle, the number of vascular bundles and the presence of medulla. In monocot root, the medulla is well developed, whereas, in dicot root, it is reduced, due to the extensions of xylem strands

So, the correct option is ‘Well developed pith’

Which of the following plants have two seed leaves?

biology kingdom plantae importance and classification of angiosperms plant adaptation adaptation in plants

  1. Rice

  2. Maize

  3. Green gram

  4. None of these

Show answer
Correct Option: C
Explanation:
  • Green grams are dicotyledons and have two seed leaves/cotyledons in their seeds.
  • Maize and rice are monocots having one seed leaf or cotyledon in their seeds.
  • So, the correct answer is 'Green gram '.

Pick the odd one out

biology kingdom plantae importance and classification of angiosperms plant adaptation adaptation in plants

  1. Paddy

  2. Groundnut

  3. Maize

  4. Peas

Show answer
Correct Option: D
Explanation:

The cropping is categorized into two main types kharif and rabi on the basis of the monsoon season. The Kharif crops are typically monsoon crops as the cropping season is started from July –October at the time of the south-west monsoon and the Rabi crops are non-monsoon crops and the cropping season is from October-March (winter). The Kharif crops include paddy, maize, groundnut (oilseeds), etc; while, the pea is a rabi crop. 

So, the correct answer is option D, Peas.