Question

Which of these is not a correct match?
(a)Catkin-Mulberry
(b)Capitulum-Sunflower
(c)Corymb-Candytuft
(d)Raceme-Wheat

Answer 1

Instead of a single flower, a group or cluster of flowers exist on the plant known as an inflorescence. The given options are examples of inflorescences found in the plants. The given options are the simple racemose inflorescences with their respective plants.

Complete step by step answer:
The inflorescence is a shoot modification and is a group of flowers arranged on a stem. The inflorescence is classified into many types depending on the arrangement of the flowers.
- The catkin is a simple racemose inflorescence that is a single, compact, unisexual, and drooping spike. Mulberry is an example.
- The capitulum is a simple racemose inflorescence that is a contracted raceme where the peduncle is flattened to form a receptacle that bears small and sessile flowers known as florets. Sunflower is an example of the capitulum.
- The corymb is an unbranched simple inflorescence that has a short main axis. It bears pedicellate flowers in an acropetal fashion where the lower flowers have long pedicels than upper ones so that the flowers are at the same level and flat-topped or convex. Candytuft is an example of a corymb.
- Raceme is an unbranched simple inflorescence. The peduncle has bisexual and pedicellate flowers arranged acropetally. Examples are radish and lupin. The wheat flower has a spikelet inflorescence, not a raceme. Hence, it is the wrong combination.

So, the correct answer is ‘Raceme - Wheat’.

Additional information: Inflorescence is classified as 1. Solitary Flowers 2. Racemose Inflorescence 3. Cymose Inflorescence 4. Mixed Inflorescence and 5. Special Inflorescence.
- In the capitulum, the florets are arranged in a centripetal fashion where the younger florets are towards the center and the older are towards the periphery.
- Spikelets are characteristic of grass flowers where small-flowered spikes are arranged in panicles or spikes. Examples are wheat, oat, etc.

Note:
A catkin is also known as amentum.
- Capitulum is also known as the flower head.
- Another example of a panicle apart from the corymb is the anthela where the lateral flowers are higher than the central ones.