1. Which of the following is the difference between a monocotyledonous and a dicotyledonous plant?
a) Both are gymnosperms
b) Monocot have two cotyledons, whereas dicot have one cotyledons
c) Monocot have one cotyledons whereas dicot have two cotyledons
d) Monocot plants have one egg cell in embryo sac whereas dicot have two egg cell in embryo sac
2. Which of the following characteristic does not occur in Pinus?
a) The number of needles in a spur of Pinus roxburghii is three
b) Each vascular bundle in the long shoot of Pinus consists of xylem facing towards the centre of the shoot
c) Microsporophyll of Pinus bears two microsporangia
d) Pinus is a homosporous gymnosperm
3. Bryophytes are called amphibians of plant kingdom because
a) Their reproductive phase requires water
b) Their sex organs are multicellular and jacketed
c) They have tracheids
d) All of the above
4. Calyptra develops from
a) Venter wall of archegonium b) Outgrowth of gametophyte
c) Neck wall of archegonium d) Paraphysis of the archegonial branch
5. Species of Sphagnum, a moss, provides
a) Oil, that have long been used as fuel b) Peat (fuel)
c) Agar-agar d) Antibiotic
6. Spirogyral lateral conjugation takes place in
a) Heterosporous species b) Homosporous species
c) Heterothallic species d) Homothallic species
7. Which one of the following classes is included under gymnosperms?
a) Lycopsida b) Bryopsida c) Cycadopsida d) Pteropsida
8. Study the following and identify two characters found in both Cycas and Pteris.
I. Formation of motile male gametes.
II. Formation of haploid endosperm.
III. Formation of sporophyte directly from gametophyte without gametic union.
IV. Formation of archegonia in female gametophyte.
The correct match is
a) I and IV b) I and III c) II and IV d) III and IV
9. Iodine is found in algae
a) Ulva b) Ulothrix c) Chlorella d) Laminaria
10. The members of algae reproduce by
a) Vegetative method b) Asexual method
c) Sexual method d) All of these
11. Consider the following statements about sexual reproduction in brown algae?
I. Sexual reproduction may be oogamous isogamous or anisogamous
II. Union of gametes take place in water or within the oogonium
III. The gametes are pear-shaped and bear two laterally attached flagella
Which of the statements given above are correct?
a) I and II b) I and III c) II and III d), II and III
12. Which of the following is known as ‘bog moss’?
a) Polytrichum b) Funaria c) Sphagnum d) Porella
13. Which of the following has multiflagellate sperms?
a) Equisetum b) Riccia c) Lycopodium d) Anthoceros
14. Angiospermic plants are divided into
a) Dicot b) Monocot c) Both (a) and (b) d) Heart wood plant and sapwood plant
15. Cycas seed is
a) Dicotyledonous b) Monocotyledonous
c) Dicotyledonous, non-endospermic d) Monocotyledonous, endospermic
16. The correct statements about bryophytes are
I. the sperms are biflagellate
II. the sperms are released into water and fuses with the egg to produce the zygote out side the body
III. zygotes undergoes reduction division immediately
IV. they produce a multicellular body called a sporophyte
a) I, II and III b) I, II and IV
c) I and IV d) III and IV
17. Which of the following is pteridophytes belong to class-Pteropsida?
a) Equisetum and Psilotum b) Lycopodium and Adiantum
c) Selaginella and Pteris d) Pteris and Adiantum
18. The 13-celled male gametophyte in Selaginella is
a) 12 cells of antheridium + 1 prothallial cell
b) 10 cells of antheridium + 3 prothallial cells
c) 8 cells of antheridium + 2 prothallial cells
d) None of the above
19. In haplontic life cycle, the dominant generation is
a) Sporophyte b) Gametophyte
c) Both (a) and (b) d) None of the above
20. Carrageenin, a jelly-like substance is obtained from
a) Chondrus b) Fucus c) Sargassum d) Ulothrix
| ANSWER-KEY | ||||||||||
| Q. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| A. | C | D | A | A | B | D | C | A | D | D |
| Q. | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| A. | D | C | A | C | A | C | D | A | B | A |
Explanation
1 (c) Division- Angiospermae is sub-divided into two classes.
Class-Dicotyledonae and Monocotyledonae, Monocot have one cotyledon whereas dicot have two cotyledons
2 (d) Pinus is heterosporous. The sporogenesis results in the formation of micro and megaspores representing the first gametophyte cells.
4 (a) Calyptra is a covering developed from the ventre of archegonium in bryophytes and pteridophytes. It acts as a transpiration shield around the immature capsule and provides protection to the young capsule.
5 (b) Species of Sphagnum, a moss, provides peat (fuel)
6 (d) Sexual reproduction in Spirogyra is accomplished by conjugation, which involves the fusion of two morphologically identical but physiologically dissimilar gametes. The conjugation is of two types-lateral and scalariform conjugation. Lateral conjugation is rarely found and takes place between two adjacent cells of same filament (i.e.,homothallic species).
7 (c) Gymnosperms are divided into three classes, i.e., Coniferopsida, Cycadopsida and Gnetopsida. Lycopsida and Pteropsida are related with pteridophytes, while Bryopsida is related to bryophytes.
8 (a) Haploid endosperm is formed only in Cycas while apogamy is found only in Pteris.
9 (d) Brown algae (Laminaria) are rich in sodium, potash and iodine. About 7% of total world production of iodine is obtained from kelps in Japan.
10 (d) Algae reproduce by vegetative, asexual and sexual methods. The vegetative and asexual methods are abundant. Algae reproduce vegetatively by fragmentation and asexually by means of motile or non-motile spores. Sexual reproduction occurs through fusion of two gametes
11 (d) In brown algae, sexual reproduction is isogamous (in Ectocarpales), anisogamous (in Cutleriales) and oogamous (in Fucus, Laminaria, Dictyota, etc). In most of the brown algae, the gametes are pyriform form and flagellated. Fertilisation is external, i.e., the gametes fuse outside the gametangia in water
12 (c) Sphagnum is commonly called as ‘bog moss’ or ‘peat moss’.
13 (a) In Equisetum, the anterior part of the antherozoid (sperm) is spirally coiled and has numerous flagella, whereas posterior part is somewhat expanded. The sperms of Lycopodium,Riccia and Anthoceros are biflagellated.
14 (c) Dicotyledons have two cotyledon in their seed and monocotyledon have one
15 (a) Cycas seed is dicotyledonous and endospermic. In Cycas, fleshy female prothallus is called endosperm, which function as a food storage region of the seed.
16 (c) In bryophytes each sperm usually consists of minute, slender, spirally curved body furnished with two long, terminal whiplash type flagella. The sperms are liberated from antheridia, swim in a film of water and attracted towards the archegonium. They enter into the archegonia and fertilise the egg and form zygote. Zygotes do not undergoes reduction division immediately. They produce a multicellular body called a sporophyte
17 (d) Dryopteris,Pteris and Adiantumbelong to class-Pteropsida of the division-Pteridophyta.
18 (a) The 13-celled microspore of male gametophyte in Selaginella is sheded from microsporagium, which is having 1-prothallial cell + 8-jacket cells +4-androgonial cells (i.e., 8+4=12 antheridial cells).
19 (b) In haplontic life cycle gametophyte is dominant and sporophyte is single celled zygote. Haplonts are
(i) Most fungi
(ii) Some green algae, e.g., Chlamydomonas
(iii) Many Protozoa, e.g., Plasmodium
20 (a) Carrageenin is obtained from Chondrus.