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Group of algae in which sexual reproduct...

Group of algae in which sexual reproduction is absent is

A

cyanophceae

B

bacillariophyceae

C

chlorophyceae

D

none of these.

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Chapter Practice Test A multicellular filamentous alga shows sexual reproduction where meiosis occurs after the formation of zygote. State the ploidy of gametophyte and gametangia.

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution. Lower groups of organisms have simpler body design Asexual reproduction is common in lower groups Asexual reproduction is common in higher groups of organisms The high incicdence of sexual reproduction in angiosperms and vertebrates. Choose the correct answer from the options given below:

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Algae are characterized by multicellular sex organs in which every cell forms the gamete. Reason: Sexual reproduction in algae is only of oogamous type.

JBD PUBLICATION-PLANT KINGDOM-EXAMPLE
  1. Group of algae in which sexual reproduction is absent is

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  2. Fill in the blanks Branching in Marchantia is………….. .

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  3. Fill in the blanks: Protonema stage is found in………….

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  4. Fill in the blanks …………..is a leafy liverwort.

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  5. Fill in the blanks Ovuliferous scale in Pinus has………….ovules.

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  6. Fill in the blanks: ……………..is an insectivorous plant.

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  7. Fill in the blanks: Pollination in Pinus is……………… .

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  8. Fill in the blanks Time interval between pollination and feritlizatoin...

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  9. Fill in the blanks Reserve food material in brown algae is in the form...

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  10. Name the plant which yield ephedrine. Write its use.

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  11. One word Name an alga where three types of zoospores are formed.

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  12. One word What is name of motilc mitospore?

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  13. One word A zygospore is haploid or diploid?

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  14. One word Name the largest Icelp?

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  15. One word Name an algae from which antibiotic is prepared?

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  16. One word Name a gymnosperm where male gametes are motile.

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  17. One word Where do you find two types of rhizoids?

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  18. Name the smallest gymnosperm.

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  19. One word Where do you find palmella stage?

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  20. One word Name an alga (unicellular) which is several cm long.

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  21. One word In which bryophytes sex organs are embedded in thallus?

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