Which of the following statements is incorrect about gymnosperms?
1. They are heterosporous
2. Male and female gametophytes are free-living
3. Most of them have narrow leaves with thick cuticles
4. Their seeds are not covered
Given are the following five statements (I - V) for your consideration:
I: | In Equisetum, the female gametophyte is retained on the parent sporophyte |
II: | In Ginkgo, male gametophyte is not independent |
III: | The sporophyte in Marchantia is more developed than that in Polytrichum |
IV: | Sexual reproduction in Volvox is isogamous |
V: | The spores of slime moulds lack cell walls |
How many of the above statements is/are correct?
1. | Three | 2. | Four |
3. | One | 4. | Two |
Which one of the following pairs is wrongly matched?
1. Salvinia - Prothallus
2. Viroids – RNA
3. Mustard-Synergids
4. Ginkgo-Archegonia
Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?
Options :
A | B | C | D | |
1. | Equisetum | Ginkgo | Selaginella | Lycopodium |
2. | Selaginella | Equisetum | Salvinia | Ginkgo |
3. | Funaria | Adiantum | Salvinia | Riccia |
4. | Chara | Marchantia | Fucus | Pinus |
Examine the figure given below and select the right option giving all the four parts (A, B, C and D) correctly identified:
A | B | C | D | |
1. | Antheridiophore | Male thallus | Globule | Roots |
2. | Archegoniophore | Female thallus | Gemma cup | Rhizoids |
3. | Archegoniophore | Female thallus | Bud | Foot |
4. | Seta | Sporophyte | Protonema | Rhizoids |
Selaginella and Salvinia are considered to represent a significant step towards the evolution of seed habit because:
1. | Embryo develops in female gametophyte which is retained on parent sporophyte. |
2. | Female gametophyte is free and gets dispersed like seeds. |
3. | Female gametophyte lacks archegonia. |
4. | Megaspores possess endosperm and embryo surrounded by a seed coat. |
Phycoerythrin is the major pigment in:
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae
Match items in Column I with those in Column II:
(A) | Peritrichous flagellation | (J) | Ginkgo |
(B) | Living fossil | (K) | Macrocystis |
(C) | Rhizophore | (L) | Escherichia coli |
(D) | Smallest flowering plant | (M) | Selaginella |
(E) | Largest Perennial alga | (N) | Wolffia |
Select the correct answer with the following
1. A –L ; B –J; C –M ; D – N ; E – K
2. A– K ; B – J; C – L ; D –M; E – N
3. A– J ; B – K; C – N ; D –L; E – K
4. A– N ; B – L; C – K ; D – N; E –J
Water is essential for Bryophyta:
1. | For fertilization and homosporous nature |
2. | Water should be filled in the archegonium for fertilization |
3. | Water is necessary for the movement of sperm |
4. | For the dissemination of spores |
A true statement for Ulothrix:
1. | Filamentous thallus and flagellated reproductive structures |
2. | Branched thallus |
3. | Flagellated cells absent |
4. | None of the above |