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Class 11 Plant Kingdom worksheet
CBSE Biology. Algae, bryophytes, pteridophytes, gymnosperms, angiosperms and plant life cycles. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
Plants called the amphibians of the plant kingdom are:
- gymnosperms
- algae
- pteridophytes
- bryophytes
Answer
(d) bryophytes
they live in soil but need water for fertilisation
- 2.
Laminaria belongs to the:
- brown algae (Phaeophyceae)
- pteridophytes
- gymnosperms
- bryophytes (mosses)
Answer
(a) brown algae (Phaeophyceae)
- 3.
In Chlorophyceae (green algae), the pigments are:
- chlorophyll a and d, phycoerythrin
- chlorophyll a and c, fucoxanthin
- chlorophyll b and c
- chlorophyll a and b
Answer
(d) chlorophyll a and b
Section B · short answer
- 4.
Why are bryophytes called amphibians of the plant kingdom?
Answer
They live in soil but need water for the sperms (antherozoids) to swim to the egg, so they depend on both land and water.
- 5.
In a flowering plant (angiosperm), the pollen grain has 21 chromosomes. How many chromosomes are there in the synergid, the zygote, the leaf cell?
Answer
synergid 21; zygote 42; leaf cell 42
n = 21; haploid n, diploid 2n, triploid 3n
Section C · long answer
- 6.
Compare the three classes of algae: pigments, stored food, cell wall, flagella and habitat.
Answer
Chlorophyceae: chlorophyll a, b; starch; cellulose wall; 2–8 equal apical flagella; fresh water, brackish and salt water. Phaeophyceae: chlorophyll a, c, fucoxanthin; mannitol and laminarin; cellulose and algin; two unequal lateral flagella; mostly marine. Rhodophyceae: chlorophyll a, d, phycoerythrin; floridean starch; cellulose, pectin and polysulphate esters; no flagella; mostly marine, often in deep water.
Fresh sheets for your child
In the app, every Plant Kingdom sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
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