Reproduction in Fungus

Q. Male and female gametophytes do not have an independent free living existence in:

1. Pteridophytes
2. Algae
3. Angiosperms
4. Bryophytes

Q. What actually is the definition for haplontic, diplontic and haplodiplontic life cycle.

Q. In Basidiomycetes, karyogamy, and meiosis take place in

Q.

Zygotic meiosis occurs in organisms showing

1. Diploid life cycle

2. Haplo-diplontic life cycle

3. Diplobiontic life cycle

4. Haplontic life cycle

Q.

In which entity sporophytic generation is represented by the zygote?

Q.

Does Hydra show metagenesis?

Q. In angiosperms, ploidy of embryo sac is :

1. Diploid
2. Triploid
3. Haploid
4. Both a or c

Q.

Identify the phenomenon depicted in the given image.

1. Zygospore formation

2. Sporulation

3. Fragmentation

4. Budding

Q. A somatic cell that has just completed the S-phase of its cells cycle as compared to gamete of the same species has?

1. Twice the number of chromosomes and twice the amount of DNA
2. Same number of chromosomes but twice the amount of DNA
3. Twice the number of chromosomes and four times the amount of DNA
4. Four times the number of chromosomes and twice the amount of DNA

Q. A diploid parent plant body produces _______ gametes and a haploid parent plant body produces _________ gametes.

1. Diploid, haploid
2. Haploid, diploid
3. Diploid, diploid
4. Haploid, haploid

Q. Which of the protozoan is considered as a connecting link between plants and animals?

1. Paramoecium
2. Euglena
3. Entamoeba
4. Monocystis

Q. Axolotl is the larva of

1. Ambystoma.
2. Silkworm.
3. Roundworm.
4. Amphioxus.

Q. Wall appears in consumer-decomposer protists during

1. Spore stage
2. Both B and C
3. Gametangium
4. Somatic phase

Q. Very short answer type.
Bryophytes exhibit two successive generations, gametophytes and sporophytes. These phases alternate each other. Name this phenomenon

Q. Pteridophytes are also called

1. Vascular amphibians of plant kingdom
2. First tracheophytes
3. Botanical snakes
4. All of the above

Q.

Select the incorrect statement from the following.

1. Gametes are always haploid though the parent plant body from which they arise may be either haploid or diploid.

2. A haploid parent produces gametes by meiotic division.

3. Most fungi, algae and bryophytes have haploid body.

4. In pteridophytes, gymnosperms and angiosperms the parental body is diploid.

Q.

when does meiosis occur in the organisms wih haplontic and diplontic life cycles respectively

Q. Which of the following have an independent gametophyte generation and a dependent sporophyte generation?

1. Mosses
2. Ferns
3. Horsetails
4. Conifers

Q.

1. Megasporogenesis
2. Megagametogenesis
3. Microgametogenesis
4. None of the above

Q. (A) The sporophyte in liverworts is more elaborate than that in mosses.
(B) Salvinia is heterosporous.
(C) In Pinus, male and female cones are borne on different trees.
(D) The life-cycle in all seed bearing plants is diplontic.
The two wrongly matched statements together are

1. Statement B and C
2. Statement A and B
3. Statement A and C
4. Statement A and D

Q. Stem and leaves of bryophyta plants are

1. Analogous to stem and leaves of higher plants
2. Homologous to stem and leaves of higher plants
3. Both analogous and homologus
4. None of the above

Q.

Do haploid oganisms never undergo meiosis?

Q. Draw a diagram to describe the life cycle of the moss, pointing out significant features

Q. Plasmogamy refers to _______________________.

1. The fusion of two haploid hyphae with simultaneous nuclear fusion
2. The fusion of two haploid hyphae without simultaneous nuclear fusion
3. Fusion of egg cell with sperm
4. Fusion of sperm with polar nuclei

Q. Which one of the following is not characteristic of Pteridophytes?

1. Pinna release spores.
2. Dominant gametophytic plant body.
3. Dominant sporophytic plant body.
4. Prothallus give rise to gametophytic body.

Q. Prothallial cells in the male gametophyte of Selaginella are/is

1. 1
2. 4
3. 8
4. 2

Q. Which of the following produces androgenic haploids in anther cultures?

1. Anther wall
2. Tapetal layer of anther wall
3. Young pollen grains
4. Connective tissue

Q. An irregular mode of reproduction resulting in the development of an embryo without fertilisation is called
I. Parthenogenesis
II. Apogamy
III. Sporophytic budding
Select the correct answer using the code given below.

1. Only I
2. I, II and III
3. II and III
4. Only II

Q. Which one of the following animal possesses giant chromosome?

1. Drosophila
2. Elephant
3. Mouse
4. Pigeon

Q. What is true of bryophytes? They have

1. Thalloid nature
2. Chloroplasts
3. Archegonia
4. All the above