WIUS umerent from viruses?
5. What are the characteristics features of euglenoids:
6. What is the nature of cell walls in diatoms?
7. Find out what do the terms algal bloom' and red tides signify?
8. Water vascular system is the characteristic of which group of the following:-
(a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata
9. All vertebrates are chordates but all chordates are not vertebrates. Justify the statements?
10. What are the Modifications that are observed in birds that help them fly?
11. What are the peculiar feature that you find in parasitic platyhelminthis?
12. What is difference b/w chondrichthyes and ostichthyes?
13. What is the difference b/w chordates and Non-chordates?
14. What type of symmetry is found in larva of echinodermata?
15. What is Coelom?
16. How is pinnately compound leaf different from palmately compound leaf?
17. Explain with suitable example the different types of phyllotaxy?
18. Describe the modification of stem with suitable examples?
19. Define the term inflorescence. Explain the different types of it?
20. Why xylem and phloem called complex tissues?
21. Difference b/w (i) Monocot root and Dicot root (ii) Monocot stem and dicot stem
22. What is the function of nephridia?
23. What are the cellular components of blood?
24. How many spermiathecae are found in earthworm?
25. What is the position of ovaries in Cockroach?
recent in abdomen of cockroach
Answers
Answer:
8) Water vascular system is found in echinodermata
9)The members of subphyla Vertebrata possess notochord during the embryonic period. The notochord id replaced by a cartilaginous or bony vertebral column in the adult. Thus all vertebrates are chordates but all chordates are not vertebrates.
10) Modifications that help birds in flight are their Pneumatic or hollow bones, they are warm blodded, streamlined body shape, absence on urinary bladder to reduce weight.
12) Chondrichthyes are marine animals. Have cartilaginous endoskeleton, ventrally located mouth, notochord persist throughout life, gill slit are seperate and are without operculum
Osteichtyes include both fresh and marine and have endoskeleton made of bones. have stremlined body. Have 4 pair of gill slits which are covered by operculum. Terminal mouth. Most important is presence of air bladder which regulate bouyancy.
14) Larva of echinoderms shows Bilateral symmetry.
You asked too many questions, i'll answer the rest later...hope this helps you