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(ff) #1

sOLUTIONs


CHAPTER-1 : THE lIvING wORlD



  1. (c) 2. (d) 3. (b) 4. (b) 5. (a)

  2. (a) 7. (b) 8. (c) 9. (a) 10. (b)

  3. (c) 12. (a) 13 (b) 14. (b) 15. (b)

  4. True 17. True

  5. False : The word ‘species’ was introduced or defined by
    John Ray.

  6. True

  7. True 21. True 22. True

  8. True

  9. False : Natural History Museum is located in london.

  10. True

  11. A-(v), B-(i), C-(ii), D-(iii), E-(iv)

  12. A-(i, v), B-(ii, vi), C-(iii,vii), D-(iv, viii), E-(ix, x)


28.(A) (i) irreversible (ii) cell division
(iii) exclusive (iv) intussusception
(v) anabolism (vi) catabolism
(vii) Negative growth
(B) According to the rules of binomial nomenclature each
organism is given two names one name consisting of the
two words, generic and specific. Two species belonging to
same genus can cannot have similar specific names. The
specific generic name is written first followed by generic
specific name.
Generic name begins with a small capital letter whereas
specific name begins with a capital small letter.


Scientific names are derived from Spanish latin
language.



  1. (c) 30. (a) 31. (a) 32. (b) 33. (a)

  2. (c) 35. (d) 36. (d) 37. (b) 38. (b)

  3. (a) A – Muscidae


B – Solanales


C – Monocotyledonae


D – Felis catus
(b) Convolvulaceae
(c) Stomoxys (stable fly)



  1. (a) A – A store house of collected plant specimens that
    are dried, pressed and preserved on sheets.
    B – Collection and maintenance of living plants for
    reference.
    C – Enclosed areas where animals are kept in open
    enclosures instead of cages.
    D – A place used for storage, preservation and
    exhibition of objects of natural history, art and
    antiquities.
    E – A dichotomic table of alternate characters known
    as couplet each character of couplet is called as
    lead.


(b) (i) 41×29
(ii) Moscow
(iii) ex-situ
(iv) Andman and Nicobar Islands
(v) indented
(vi) bracketed
CHAPTER-2 : BIOlOGICAl ClASSIFICATION


  1. (b) 2. (c) 3. (d) 4. (b) 5. (c)

  2. (b) 7. (d) 8. (d) 9. (c) 10. (d)

  3. (c) 12. (a) 13. (a) 14. (b) 15. (b)

  4. True 17. True

  5. False : The viral genome gets integrated with host DNA in
    lysogenic phase of reproductive cycle of virulent phages.

  6. True 20. True

  7. False : Zygote is the only diploid structure in the organisms
    having life cycle with zygotic meiosis.

  8. True 23. True 24. True

  9. False : Deuteromycetes are called imperfect fungi because
    they lack sexual reproduction.

  10. A-(iv), B-(i), C-(ii), D-(v), E-(iii)

  11. A-(i, viii), B-(vi, ix), C-(ii, v), D-(iii, iv), E-(vii, x)
    28.(A) (i) terrestrial (ii) chlorophyll
    (iii) autotrophic (iv) cellulose
    (v) starch (vi) oil globules
    (vii) Motile
    (B) Sclerotia and rhizomorphs are the means of sexual
    vegetative reproduction in fungi. Rhizomorphs Sclerotia
    are perennating bodies made up of compact masses
    of hyphae whereas sclerotia rhizomorphs are rope like
    twisted subterranean masses of hyphae. Vegetative Asexual
    reproduction in fungi occurs through spores. The sexually
    produced spores are called mitospores, meiospores e.g.,
    basidiospores, conidia ascospores , etc. Asexually produced
    spores are called meiospores mitospores, e.g., ascospores
    oidia, chlamydospores etc.

  12. (b) 30. (c) 31. (b) 32. (a) 33. (d)

  13. (b) 35. (b) 36. (d) 37. (a) 38. (c)

  14. (a) : A – Zoospores
    B – Sporangiospores
    C – Chlamydospores
    D – Ascospores
    E – Basidiospores
    (b) (i) Zoospores (A) are motile spores that occur is some
    Phycomycetes, e.g. Phytophthora and Albugo. They
    bear 1-2 flagella anteriorly, posteriorly or laterally.
    (ii) Basidiospores (E) are nonmotile meiospores which
    are formed exogenously on short outgrowth of club-
    shaped structure called basidium.

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