Question

Match the following lists:

| List - I| | List - II
---|---|---|---
A)| Alstonia | I)| Roots of lower nodes of the stem
B)| Ananas Sativus| II)| Leaflets are attached to a common point in the leaf
C)| Sugar cane | III)| Swollen placenta
D)| Bombax ceiba| IV)| more than two leaves to every node
| | V)| underground lateral branches producing aerial leafy shoots

(a) A-IV, B-V, C-I, D-II
(b) A-V, B-III, C-I, D-II
(c) A-V, B-III, C-II, D-IV
(d) A-V, B-II, C-IV, D-V

Answer 1

- Examples of whorled phyllotaxy
- Examples of a stem modification called suckers
- Split roots are present in the fibrous root system
- Examples of a palmately compound leaf

Complete step by step answer:
If more than two leaves arise at a single node, forming into whorl is called whorled phyllotaxy is seen in Nerium and Alstonia. A stem modification in which the lateral branches arise from the basal and underground portion of the stem that grows horizontally and comes off the soil gives rise to leafy shoots are called suckers seen in banana, pineapple, and chrysanthemums. The fibrous root system in sugarcane contains split roots at the lower nodes of the stem. All the leaflets are attached to common points i.e, at the tip of the petiole called palmately compound leaf seen in silk cotton.
So, the correct answer is 'A-IV, B-V, C-I, D-II.'

Additional information:
- The arrangement pattern of leaves on the stem or branch is called phyllotaxy. This is usually 3 types namely- alternate, opposite, and whorled. An alternate arrangement of leaves that arises from each node is alternate phyllotaxy, the opposite arrangement of pair leaves that arise at each node is opposite phyllotaxy, more than two leaves arise at each node it is whorled phyllotaxy.
- There are two types of leaves namely simple and compound leaves. Compound leaves are further classified into two types namely pinnately compound leaf and palmately compound leaf based on the attachment of leaves either on rachis or tip of the petiole.

Note: Examples of alternate phyllotaxy: hibiscus, sunflower; opposite phyllotaxy: calotropis, guava; whorled: Nerium and Alstonia.
Examples of pinnately compound leaf: neem; palmately compound leaf: Bombax ceiba(silk cotton)
- Ananas Sativus is the scientific name of pineapple.