Identify the correctly matched pair:
1. Isogamy with flagellated gametes Volvox
2. Isogamy with non-flagellated gametes Ulothrix
3. Anisogamy Udorina
4. Oogamy Spirogyra

 
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The cell wall of the cells of an alga has cellulose and algin. Another feature expected in this alga would be:
 
  • Floridean starch as stored food
  • Phycoerythrin in addition to chlorophyll a, c
  • 2, unequal, lateral flagellar insertions
  • Polysulphate esters in cell wall
An alga lacks flagellar insertions in its life cycle and stores food as floridean starch. This alga can be:
  • Chara
  • Fucus
  • Porphyra
  • Ectocarpus
Marchantia and Funaria are similar in:
  • having multicellular branched rhizoids
  • dorsoventrally flattened plant body
  • asexual reproduction by gemmae
  • dominant gametophyte in the life cycle
In pteridophytes, Selaginella:
  • has macrophylls
  • stobili or cones are not seen
  • is hetrosporous
  • lacks vascular tissue
In algae with haplontic life cycle:
I. there are no free-living sporophytes
II. mitosis in zygote results in diploid spores
III. gametophyte is the dominant photosynthetic phase
 
  • Only I and II are correct
  • Only I and III are correct
  • Only II and III are correct
  • I, II and III are correct
Sphagnum is a bryophyte, commonly called as bog moss or peat moss, that is used as packing material for trans-shipment of living materials because:
  • It is easily available
  • It is hygroscopic
  • It is hydrophobic
  • It prevents soil erosion
Which of the following is true regarding the classes of Bryophytes?
  • The thallus of mosses is dorsiventral and closely appressed to the surface
  • In the life cycle of liverworts, the predominant gametophytic stage is divided into two stages - the protonema and the leafy stage
  • The sporophyte in liverworts is more elaborate than in mosses
  • Asexual reproduction in liverworts takes place by fragmentation of thalli, or by the  formation of specialised structures called gemmae
The fungi shown in the diagram below belongs to the class which has:

2. 2 unequal and lateral flagella
  • 2-8 equal and apical flagella
  • 3. 2 unequal and apical flagella
  • 3
  • 2-8 equal and lateral flagella
Statement 1: Chlorella is used as food supplement by space travellers
Statement 2: Chlorella is a unicellular algae
1. Both 1 and 2 are true and 2 correctly explains 1
2. 1 is true and 2 is false
  • 4. Both 1 nd 2 are false
  • 3. Both 1 and 2 are true ut 2 does not explain 1
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Selaginella, a pteridophyte which belongs to the class Lycopsida, is:
  • heterosporous and has microphylls
  • homosporous and has macrophylls
  • homosporous and has microphylls
  • heterosporous and has macrophylls
Which of the following statement is true about the difference between Cycas and Pinus?
  • Pinus has coralloid roots associated with N2-fixing cynobacteria, whereas Cycas has roots with fungal association in the form of mycorrhiza
  • Cycas is heterosporous, whereas Pinus is homosporous
  • Male cones and female megasporophylls are borne on different trees in Cycas, whereas they are borne on the same tree in Pinus
  • Stems of Cycas are branched, whereas Pinus has unbranched stems
Which of the following algae exhibits the life cycle as shown in the diagram below:
  • Fucus
  • Spirogyra
  • Ectocarpus
  • Polysiphonia
Consider the following statements about the different classes of algae:
I. The members of Chlorophyceae have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose
II. The members of Rhodophyceae do not have a flagellum
III. Members of Phaeophyceae store food as floridean starch which is very similar to amylopectin and glycogen in structure
  • Only I and III are correct
  • Only I and II are correct
  • Only II and III are correct
  • All I, II and III are correct
Match each item in Column I with one in Column II and choose the correct option from the codes given below:
Column I Column II
A. Psilopsida P Selanginella
B. Lycopsida Q Adiantum
C. Sphenopsida R Equisetum
D. Pteropsida S Psilotum
 
A B C D
1. R  Q S P
2. S  P R Q
3. P  S Q R
4. Q  R P S
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Practice Botany Quiz Questions and Answers