11th biology
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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
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a) fertilized ovule b) fertilized ovule with embryoc) unfertilized ovule d) fertilized ovary