Wednesday, August 17, 2016

Grade 11 Biology short answer questions (HSEB)

1.      Why pteriodophye are called vascular cryptogams?
Ans:  Pteriodophye are called vascular cryptogams because they have vascular or conducting tissue like xylem and phloem and they do not bear flower at all.
2.      Why Bryophyte are called amphibian plant?
       Ans:  Bryophyte are called amphibian plant because they live on land but they need water    
       for  fertilization.     
3.       Bryophya is advance than thallophyta. Why?
Ans:

4.       Difference between rhizoid and root?

5.       Why marchantia do not have root and why they have rhizoid?

6.       How thallophyta and bryophyte conduct food if they do not have vascular tissue?

7.       What are saprophes?

8.       What  is mycorrhiza?

9.       Diffference between  Mycorrihzal and Simbios association?

10.   What is micobiont?

11.   What is Phycobiont?

12.   What is Lichen? How does simboicic accociation occur in Lichen?

13.   What is Tracheophta?
 Ans : Group in which plant body is divided into root stem and leaf and which contain vascular tissue.
14.   Why gymnosperm has naked seed and Angiosperm has enclosed seed?
15.   Full form of PPLO and   ?
Ans:  PPLO – PeuroPhenmonia Like Organisms.
16.   What is incipient nucleus?
17.   What is chemical component of cell wall of Bacteria, fungi and plant?
18.   In which form the energy is stored in Human body and plant body?
19.   What is the role of pilli or fimbriae of prokaryotic cell?
20.   Why paramecium is called infusorians and slipper animucle?
21.   What is the function of nucleus inn paramecium?

22.   What is the function of contractile vacuole and trycocyst in Paramecium?

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