11th biology

2
1. Algae are a) chlorphyllous crypotogams b) non chlorphyllous crypotogams c) chlorphyllous phanerogams d) non- chlorphyllous phanerogams 2. In which of the following non motile forms are completely absent? a) green algae b) brown algae c) red algae d) all the above 3. Alga rich in protein is a) chlorella b) spirogyra c) oscillatoria d) ulothrix 4. Lodine is obtained from the members of a) green algae b) brown algae c) red algae d) blue – green algae 5. Brown algae is characterised by the presence of a) phycocyanin b) phycoerythrin c) fucoxanthin d) haematochrome 6. Rhodophycease is red coloured due to a) xanthophyll b) carotenoids c) y- phycoerythrin d) y-phycocyanin 7. Bryophytes live in habitat which are a) sandy b) moist c) dry d) saline 8. Female reproductive part of bryophytes is a) antheridium b) oogonium c) archegonium d) pinus 9. Last stage of gametophytic generation is a) gametes b) zygote c) spore mother cells d) spores 10. Which one of the following is true moss? a) club moss b) reindeer moss c) lrish moss d) bogg moss 11. The late ---------- era is regarded as the age of pteridophytes. a) paleozoic b) Mesozoic c) pre-cambrian d) coenozoic

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Page 1: 11th Biology

1. Algae area) chlorphyllous crypotogams b) non chlorphyllous crypotogamsc) chlorphyllous phanerogams d) non- chlorphyllous phanerogams

2. In which of the following non motile forms are completely absent?a) green algae b) brown algae c) red algae d) all the above

3. Alga rich in protein isa) chlorella b) spirogyra c) oscillatoria d) ulothrix

4. Lodine is obtained from the members ofa) green algae b) brown algae c) red algae d) blue – green algae

5. Brown algae is characterised by the presence ofa) phycocyanin b) phycoerythrin c) fucoxanthin d) haematochrome

6. Rhodophycease is red coloured due toa) xanthophyll b) carotenoids c) y-phycoerythrin d) y-phycocyanin

7. Bryophytes live in habitat which area) sandy b) moist c) dry d) saline

8. Female reproductive part of bryophytes isa) antheridium b) oogonium c) archegonium d) pinus

9. Last stage of gametophytic generation isa) gametes b) zygote c) spore mother cells d) spores

10. Which one of the following is true moss?a) club moss b) reindeer moss c) lrish moss d) bogg moss

11. The late ---------- era is regarded as the age of pteridophytes.a) paleozoic b) Mesozoic c) pre-cambrian d) coenozoic

12. Which is the dominant phase in pteridophyta?a) leaves b) sporophyte c) gametophyte d) prothallus

13. Gymnosperms area) ever green b) perennial woody trees c) shrubs d) all of these

14. _____________ is the tallest living plant in the world.a) ginkgo biloba b) sequoia sempervirensc) taxodium mucronatum d) zamia pygmaea

15. In gymnosperms pollination is exclusively bya) animals b) wind c) water d) insects

16. Coralloid roots of cycas possess a symbiotic algaea) aulosira b) spirogyra c) ulothrix d) anabaena

17. Coralloid roots help cycas ina) fixation and absorption of nitrogen b) absorption of waterc) absorption of minerals d) respiration

18. Cycas isa) hermaphrodite b) dioecious c) monoecious d)none of these

19. Three generations one within the other are present in the seeds ofa) gymnosperms b) dicots c) monocots d) all of above

20. A true seed is

Page 2: 11th Biology

a) fertilized ovule b) fertilized ovule with embryoc) unfertilized ovule d) fertilized ovary