SELECT * FROM question_mgmt as q WHERE id=244 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=7 AND chapterId=7 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 11th biology Morphology of Flowering Plants differentiate between a racemose and cymose infl

Question: Differentiate between
(a) Racemose and cymose inflorescence
(b) Fibrous roots and adventitious roots
(c) Apocarpous and syncarpous ovary

Answer:

a)

Racemose inflorescence

Cymose inflorescence

1) Younger flowers are present at the tip while older flowers are arranged at the base of this inflorescence. Such an arrangement is called acropetal succession.

2) The main axis in racemose inflorescence continues to grow and produce flowers laterally.

1) Younger flowers are present at the base of the inflorescence, while older flowers are present at the top. Such an arrangement is called basipetal succession.

2) The main axis in cymose inflorescence has limited growth, which later terminates into a flower.

b)

Fibrous root

Adventitious root

1) In monocots, the primary root which develops from the radicle of the seed is short-lived and is replaced by a large number of roots arising from the base of the stem.

2) It is found in wheat and other cereals.

1) These roots arise from any part of the plant other than the radicle of seeds.

2) It is found in banyan, Monstera, and other plants.

c)

Apocarpous ovary

Syncarpous ovary

1) The flowers with apocarpus ovary have more than one carpel. These carpels are free.

2) It is found in lotus and rose flowers.

1) The flowers with syncarpous ovary have more than one carpel. However, these carpels are fused.

2) It is found in the flowers of tomato and mustard.

 


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