CDP -4
1. Pteridophytes are also known as
a) Cryptogams b) Vascular crytogams
c) Amphibious plants d) Phanerogams
2. Endosperm of gymnosperm is
a) Diploid b) Tetraploid c) Haploid d) None of the above
3. Have capacity of absorbing water used to replace cotton and used as a fuel is
a) Marchantia b) Riccia c) Sphagnum d) Funaria
4. Which of the following plant materials, is an efficient water imbibant?
a) Lignin b) Pectin c) Agar d) Cellulose
5. The first plants to appear after a forest fire are the ferns, this is because of the survival of their
a) Spores b) Leaves c) Fronds d) Rhizomes
6. If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?
a) Types of pigments present in the cell
b) Nature of stored food materials in the cell
c) Structural organization of thallus
d) Chemical composition of the cell wall
7. Which of the following is /are grouped under phanerogams?
a) Angiosperms b) Gymnosperms
c) Pteridophytes d) Both (a) and (b)
8. Calyptra is derived from
a) Archegonia b) Capsule c) Antheridia d) Columella
9. Megaspore mother cell divides …A… to give rise …B… megaspores
Identify the A and B and choose correct option
a) A-mitotically; B-two b) A-mitiotically; B-four
c) A-amitotically; B-four d) A-dinomitotically; B-four
10. In Cycas
a) Archegonia are present b) Antheridia are present
c) Archegonia are absent d) Both (a) and (b)
11. In angiospermic plant pollen grain reaches to embryo sac after its germination on …A… and through …B… . Here A and B refer to
a) A-anther; B-micropyle b) A-stigma; B-pollen tube
c) A-stigma; B-micropyle d) A-anther; B-pollen tube
12. Largest gametophyte is found in
a) Angiosperms b) Polytrichum
c) Nephrolepis d) Cycas
13. Which is the source of turpentine oil?
a) Gymnospermic wood b) Angiospermic wood
c) Gymnospermic seed d) Angiospermic seed
14. What is the ratio of equational division that takes place in Cycas and angiosperms respectively during the
formation of male gametes from pollen grains?
a) 3 : 2 b) 3 : 1 c) 2 : 1 d) 2 : 3
15. In moss, the sporophyte is differentiated into
a) Seta and capsule b) Foot and seta
c) Protonema, foot and capsule d) Foot, seta and capsule
16. In algae, sexual reproduction takes place through the fusion of two
a) Spores b) Fragments
c) Gametes d) Zoospores
17. In Spirogyra, sometimes a ladder-like structure is present due to
a) Vegetative reproduction b) Asexual reproduction
c) Lateral conjugation d) Scalariform conjugation
18. Embryo sac consists of
a) One egg cell b) Two synergids
c) Three antipodal and two polar nuclei d) All of the above
19. Triple fusion in angiosperms is the fusion of second male gamete with
a) Two polar nuclei (secondary nucleus) b) Two antipodal cells
c) One antipodal cell d) Antipodal cell and one synergid cell
20. Carpel consists of
a) Style and stigma b) Style, stigma and pistil
c) Style, anther and pistil d) Anther, style and stigma
| ANSWER-KEY | ||||||||||
| Q. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| A. | B | C | C | C | D | A | D | A | B | A |
| Q. | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| A. | B | B | A | C | D | C | D | D | A | B |
CDP-4 SOLUTIONS
1 (b) Pteridophytes are called vascular cryptogams because among cryptogams the vascular strands are present only in pteridophyte. All the vegetative parts possess vascular tissues (i.e., xylem and phloem)
3 (c) Sphagnum is employed for gauze to dress wounds and peat deposits are cut into blocks, dried and used as fuel.
4 (c) Among plant imbibants phycocolloids, e.g., Agar-agar are the best imbibants followed by protein, starch and cellulose.
6 (a) Types of pigments present in the cell of algae is the most important character for classification.
7 (d) Eichler (1883) divided plant kingdom into two sub-kingdoms.
Cryptogamae Plants having no flowers such as algae, fungi, bryophytes and pteridophytes.
Phanerogamae Plants having evident reproductive organs like flowers and seeds such as angiosperms and gymnosperms.
8 (a) Calyptra is a small sheath of cells, derived from the archegonia, which covers top of the capsule.
9 (b) A-Meiotically; B-Four ,
In gymnosperm megaspore differentiate to give rise to composite structure called ovule. Megaspore mother cell divides meiotically to give rise four haploid megaspores
10 (a) In Cycas, archegonia are present, while antheridia remain absent. In ferns and mosses, both archegonia as well as antheridia are present.
11 (b) In angiospermic plant pollen grain reaches to embryo sac after its germination on stigma and through pollen tube
12 (b) In bryophytes, gametophytic plant body is dominated over sporophytic. Sporophytes are depend on gametophytes. Bryophytes like Polytrichum have largest gametophyte.
13 (a) Old pine (Pinus) stumps are still being distilled to some degree as a source of turpentine and resin.
14 (c) During formation of male gametes from pollen grains, the ratio of equatorial division that takes place in Cycas and angiosperms is 2 : 1 respectively.
15 (d) In moss, the sporophyte is differentiated into foot, seta and capsule
16 (c) Sexual reproduction involves the formation of gametes and their fusion during the process called fertilisation. Depending upon the structure and behavior of gametes, there are different types of sexual reproduction. These are
(i) Isogamy Fusion of morphologically alike gametes which look and behave similarly is called isogamy
(ii) Anisogamy Fusion of morphologically dissimilar gametes, which may be motile or non-motile
(iii) Oogamy Fusion of a large non-motile egg or ovum with a smaller motile sperm (except in Rhodophyceae). The fusion of gametes is called oogamy
17 (d) Sexual reproduction I Spirogyra takes place by conjugation. Scalariform conjugation occurs between the cells belonging to different filaments. Hence, these species are heterothallic. Lateral
conjugation is primitive than scalariform conjugation.
18 (d) An ideal embryo sac contains 7-cells and 8-nuclei. 3 cells are present at the micropylar end and form egg apparatus, mid of which forms egg cell and rest two lateral form synergids. One cell present in the centre of embryo sac, known as central cell and contains two nuclei and rest three cells are present at chalazal end for antipodal cells
19 (a) During fertilisation in plants, one male gamete fuses with the egg cell and forms the zygote (this process is called syngamy). The other male gamete fuses with the secondary nucleus (this is called triple fusion). The syngamy and triple fusion together are called double fertilisation
20 (b) Style, stigma and pistil.
Female sex organ is carpel also known as pistil or gynoecium. It consist of three parts style, stigma and ovary
CDP -5
CDP -5