Fusion of Gametes

Q. Identify the type of sexual reproduction that takes place in Ulothrix, Eudorina, Volvox, Spirogyra, and Fucus respectively.

1. Isogamous, anisogamous, oogamous, isogamous, oogamous
2. Anisogamous, isogamous, oogamous, isogamous, oogamous
3. Oogamous, anisogamous, isogamous, isogamous, anisogamous
4. Isogamous, anisogamous, oogamous, anisogamous, isogamous

Q. The fusion of two gametes dissimilar in size is called

1. isogamy
2. anisogamy
3. zoogamy
4. oogamy

Q. Protonema is

1. haploid and found in mosses
2. diploid and found in liverworts
3. diploid and found in pteridophytes
4. haploid and found in pteridophytes

Q. Match column-I with column-II and select the correct option from the codes given below.

$\begin{array}{cccc}& \text{Column-I}& & \text{Column-II}\\ \text{A.}& \text{Spirogyra}& \text{(i)}& \text{Unicellular}\\ \text{B.}& \text{Chlamydomonas}& \text{(ii)}& \text{Filamentous}\\ \text{C.}& \text{Volvox}& \text{(iii)}& \text{Colonial form}\\ \text{D.}& \text{Some giant marine forms}& \text{(iv)}& \text{Kelps}\end{array}$

1. A-(ii), B-(i), C-(iii), D-(iv)
2. A-(ii), B-(iii), C-(iv), D-(i)
3. A-(iii), B-(ii), C-(iv), D-(i)
4. A-(iii), B-(ii), C-(i), D-(iv)

Q.

In which plant are isogametes seen?

Q.

Fusion of two motile gametes which are dissimilar in size is termed as

(a) Oogamy (b) isogamy (c) Anisogamy (d) zoogamy

Q. Which characteristics best defines the moss gametophyte?

1. Protonema is the first stage followed by the leafy stage
2. The leafy stage develops directly from a spore
3. It is the predominant stage consisting of foot, seta and capsule
4. It is the much reduced form dominated by the sporophyte

Q. Which among the following do the members of Rhodophyceae possess?

1. r-phycoerythrin in their body
2. Floridean starch to store food
3. Vegetative, asexual and sexual forms of reproduction
4. All the above

Q. Both isogamous and anisogamous types of gametes are found in

1. Chlamydomonas
2. Spirogyra
3. Volvox
4. Fucus

Q. Which of the following algae exhibit all three forms of syngamy - isogamy, anisogamy and oogamy?

1. Spirogyra
2. Fucus
3. Volvox
4. Chlamydomonas

Q.

Match the following and choose the correct option -

$$\begin{array}{cc}ColoumnI& ColoumnII\\ a.Isogamy& 1.\text{Male and female gametes are different}\\ b.Anisogamy& 2.\text{Female gamete is non-motile}\\ c.Oogamy& 3.\text{Gametes are identical}\end{array}$$

1. a-2, b-1, c-3

2. a-1, b-2, c-3

3. a-3, b-2, c-1

4. a-3, b-1, c-2

Q. Canal system in Porifera is not associated with

1. Respiration
2. Nutrition
3. Sexual reproduction
4. None of the above

Q.

Are jelly fungi Basidiomycota?

Q. How is pores or holes present all over the body of poriferans important?

1. The pores or holes present all over the body of the poriferans lead to a canal system that helps in circulating water throughout the body to bring in food and oxygen
2. The pores or holes present all over the body of the poriferans lead to a endocrine system that helps in circulating water throughout the body to bring in food and oxygen
3. The pores or holes present all over the body are just for beautification
4. Both A and B

Q. Branched conidiophores are found in _________.

1. Penicillium
2. Ustilago
3. Rhizopus
4. Saccharomyces

Q. Chloragogen cells of earthworm are called:

1. Green cells
2. Chromophil cells
3. Yellow cells
4. Purple cells

Q. Both isogamous and anisogamous types of gametes are found in

1. Chlamydomonas
2. Spirogyra
3. Volvox
4. Fucus

Q. Which one of the following is wrongly matched?

1. Gemma cups - Marchantia
2. Biflagellate zoospores - Brown algae
3. Uniflagellate gametes - Polysiphonia
4. Unicellular organism - Chlorella

Q. Which of the following algae exhibit all three forms of syngamy - isogamy, anisogamy and oogamy?

1. Spirogyra
2. Fucus
3. Volvox
4. Chlamydomonas

Q. Which is correct statement for Ulothrix?

1. Filamentous alga with flagellated reproductive stages
2. Filamentous alga with non flagellated reproductive stages
3. Membranous alga producing zoospores
4. Nonmotile colonial alga lacking reproductive stages

Q. The pearl oyster is

1. Sepia
2. Pinctada
3. Solen
4. Teredo

Q. The cell mouth in some protozoans is known as

1. Cytoproct
2. Cytostome
3. Peristome
4. Cytopharynx

Q. Give two peculiar characteristics of sponges.

Q. Parthenogenesis is the development of

1. Fruit without hormones
2. Fruit without fertilisation
3. Egg without fertilisation
4. Embryo without fertilisation

Q. Which characteristics best defines the moss gametophyte?

1. It is the predominant stage consisting of foot, seta and capsule
2. Protonema is the first stage followed by the leafy stage
3. The leafy stage develops directly from a spore
4. It is the much reduced form dominated by the sporophyte

Q. Which out of these is sexual and asexual structures?

1. A is asexual and C is sexual.
   
2. A is sexual and C is asexual.
3. A is bisexual and C is asexual.
4. A is bisexual and C is sexual.

Q. Which one of the following is wrongly matched

1. Uniflagellate gametes - Polysiphonia
2. Unicellular organism - Chlorella
3. Gemma cups - Marchantia
4. Biflagellate zoospores - Brown algae