Q. No.In a moss, the sporophyte
1. Manufactures food for itself, as well as for the gametophyte
2. Arises from a spore produced from gametophyte
3. Is partially parasitic on the gametophyte
4. Produces gametes that give rise to the gametophyte
1. Manufactures food for itself, as well as for the gametophyte
2. Arises from a spore produced from gametophyte
3. Is partially parasitic on the gametophyte
4. Produces gametes that give rise to the gametophyte
Which set contains flagellated male gametes?
1. Spirogyra, Anthoceros and Funaria
2. Zygnema, Saprolegnia and Hydrilla
3. Fucus, Marsilea and Calotropis
4. Riccia, Dryopteris and Cycas
Pollen chamber present in gymnosperms represents
1. Microsporangium
2. Pollen grain cell where sperms are formed
3. Opening of megagametophyte for passage of pollen tube to egg
4. Cavity in nucellus for resting pollen grains after pollination
In which one of the following, male and female gametophytes do not have free living independent existence
| 1. | Polytrichum | 2. | Cedrus |
| 3. | Pteris | 4. | Funaria |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The gametophyte is not an independent, free living generation in:
1. Polytrichum
2. Adiantum
3. Marchantia
4. Pinus
Consider the following four statements whether they are correct or wrong,
(A) The sporophyte in liverworts is more elaborate than that in mosses.
(B) Salvinia is heterosporous.
(C) The life-cycle in all seed-bearing plants is diplontic.
(D) In Pinus, male and female cones are borne on different trees.
The two wrong statements together are
| 1. (A) and (C) | 2. (A) and (D) |
| 3. (B) and (C) | 4. (A) and (B) |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because:
1. Female gametophyte is free and gets dispersed like seeds.
2. Female gametophyte lacks archegonia.
3. Megaspores possess endosperm and embryo surrounded by seed coat.
4. Embryo develops in female gametophyte which is retained on parent sporophyte.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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. | Archegoniophore | Female thallus | Gemma cup | Rhizoids |
| 2. | Archegoniophore | Female thallus | Bud | Foot |
| 3. | Seta | Sporophyte | Protonema | Rhizoids |
| 4. | Antheridiophore | Male thallus | Globule | Roots |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
1. Diplontic life cycle
2. Members of kingdom plantae
3. Mode of Nutrition
4. Multiplication by fragmentation
© 2024 GoodEd Technologies Pvt. Ltd.