NTA Abhyas NEET2020BotanyPlant KingdomPractice
Select the correct statement.
Options
- AThe algal cell wall is made up of cellulose, algin, pectin and polysulphate esters.
- BMost of the gymnosperms are homosporous.
- CMost of the pteridophytes are heterosporous, and some are homosporous.
- DWater is not required for fertilisation in seed plants like Selaginella and Salvinia.
Correct answer
A. The algal cell wall is made up of cellulose, algin, pectin and polysulphate esters.
Step-by-step solution
In Chlorophyceae, the cell wall is made up of cellulose. In Rhodophyceae, the cell wall is made up of cellulose, pectin and polysulphate esters. In Phaeophyceae, the cell wall is made up of cellulose and algin. Gymnosperms are heterosporous, and most of the Pteridophytes are homosporous, and some are heterosporous like Selaginella and Salvinia. Both these plants produce two kinds of spores, macro (large) and micro (small) spores showing a tendency towards seed formation.