Which of the following groups of algae produces algin?
(1) Phaeophyceae and Chlorophyceae
(2) Rhodophyceae and Phaeophyceae
(3) Chlorophyceae and Rhodophyceae
(4) Phaeophyceae only
Which of the following are homosporous pteridophytes?
I. Selaginella
II. Lycopodium
III. Salvinia
IV. Equisetum
(1) I and IV only
(2) II and III only
(3) II and IV only
(4) III and IV only
Pick the correct group consisting of all genera exhibiting homospory.
(1) Lycopodium, Psilotum, Selaginella, Equisetum
(2) Equisetum, Pteris, Salvinia, Psilotum
(3) Salvinia, Pteris, Lycopodium, Selaginella
(4) Equisetum, Psilotum, Lycopodium, Pteris
In the given diagrams, some of the algae have been labelled as A, B, C, D and E. Choose the correct option to identify these algae.
A | B | C | D | E | |
1. | Dictyota | Polysiphonia | Porphyra | Fucus | Laminaria |
2. | Porphyra | Dictyota | Laminaria | Fucus | Polyspiphonia |
3. | Dictyota | Polysiphonia | Porphyra | Laminaria | Fucus |
4. | Fucus | Porphyra | Dictyota | Polysiphonia | Laminaria |
Classical Taxonomy is based on
(1) morphological traits
(2) habitat of organisms
(3) similarities and dissimilarities of behaviour
(4) phylogeny
Read the following statements reagrding bryophytes and choose the incorrect option.
(1) Gametophytic phase is dominant in life cycle
(2) Fertilisation takes place in presence of water
(3) Zygote undergoes meiosis to produce sporophyte
(4) Sporophyte isphysiologically dependent on gametophyte
Gelatin, an important raw material for preparation of photographic emulsion is a by product of
(1) chicken
(2) forest
(3) cattle
(4) fish
Cycas is classified as a gymnosperms due to its
1. motile sperms
2. fruit formation
3. naked ovule
4. pycnoxylic wood
Elater mechanism for seed dispersal is exhibited by
(1) Riccia
(2) Marchantia
(3) Dryopteris
(4) Funaria
Who proposed a five-kingdom classification and named kingdoms as Monera, Protista, Fungi, Plantae and Animalia?
(1) Herbert Copeland
(2) RH Whittaker
(3) Carl Woese
(4) Carolus Linnaeus