Reproduction in Algae

Q.

Some spores are produced endogenously and some are exogenously . How ?

Q.

What is an example of an exogenous spore?

Q.

The most common, flagellated asexual spores of algae are called

1. zygospore

2. oospore

3. aplanospores

4. zoospores

Q. Male gametes are flagellated in:

1. Polysiphonia
2. Ectocarpus
3. Spirogyra
4. Anabaena

Q.

A multicelluar, filamentous alga exhibits a type of a sexual life cycle in which the meiotic division occurs after the formation of zygote. The ad adult filament of this alga has
(a) Haploid vegetative cells and diploid gametangia
(b) Haploid vegetative cells and diploid gametangia
(c) Diploid vegetative cells and haploid gametangia
(d) Haploid vegetative cells and haploid gametangia

Q. Monoecious plant of Chara shows occurrence of:

1. Antheridiophore and archegoniophore on the same plant
2. Stamen and carpel on the same plant
3. Upper antheridium and lower ogonium on the same plant
4. Upper oogonium and lower antheridium on the same plant

Q.

Algae are known to reproduce asexually by a variety of spores under different environmental conditions. Name these spores and the conditions under which they are produced.

Asexual reproduction in algae is very common mean of reproduction.

Q.

Most algal genera show haplontic lif cycle. Name an alga which is

(a) Haplo diplontic (b) Diplontic

Q.

Are mosses oogamous?

Q. Which of the following undergoes meiosis in algae?

1. Zoospore
2. Zygote
3. Aplanospore
4. Algae never undergo meiosis as they are haploid

Q. Asexual reproduction by non-motile spores is seen in

1. Ectocarpus
2. Porphyra
3. Chlamydomonas
4. kelps

Q. This class of algae has its cell wall made up of cellulose and algin, with chlorophyll a, c and fucoxanthin as its pigments. The reserve food is mannitol and laminarin. Identify the class.

1. Chlorophyceae
2. Phaeophyceae
3. Rhodophyceae
4. Cyanophyceae

Q. Which among the following is a feature common in green, brown and red algae?

1. Stored food
2. Cell wall composition
3. Pigments
4. Vegetative reproduction

Q. Endosperm is not formed in

1. Fabaceae
2. Compositae
3. Orchidaceae
4. Cucurbitaceae

Q.

What is the Isogamous type of reproduction in algae?

Q.

How does sexual reproduction occur in the members belonging to class Phaeophyceae?

Q. Which of the following alga shows multicellular, jacketed sex organs?

1. Spirogyra
2. Chara
3. Sargassum
4. Ectocarpus

Q. Male gametes are flagellated in:

1. Polysiphonia
2. Anabaena
3. Ectocarpus
4. Spirogyra

Q. Zygotic meiosis is a characterstic of

1. Marchantia
2. Chlamydomonas
3. Fucus
4. Funaria

Q. Zygotic meiosis occurs in which of the following
1) funaria
2) chlamydomonas
3) dryopteris
4) adiantum

Q. Totipotent and pluripotent.

Q.

How does sexual reproduction occur in algae?

Q. Male gametes are flagellated in:

1. Polysiphonia
2. Anabaena
3. Ectocarpus
4. Spirogyra

Q.

Are conidia asexual?

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. Which among the following is a feature common in green, brown and red algae?

1. Stored food
2. Cell wall composition
3. Pigments
4. Vegetative reproduction

Q. Which of the following statement is true for fungi?

1. Ectoparasites are non-pathogenic.
2. They are chlorophyllous.
3. Reproduce sexually as well as asexually.
4. Never form spores.

Q. Elaters of Marchantia are

1. Haploid
2. Diploid
3. Triploid
4. Polyploid

Q. Zygotic meiosis is a characteristic of

1. Fucus
2. Funaria
3. Chlamydomonas
4. Marchantia

Q. Zygospore of Mucor is :

1. Haploid
2. Thick-walled resting spore
3. Asexual spore
4. Spore that germinates to form zoospores