Mosses

Q.

What are 2 differences between dioecious and monoecious plants?

Q.

Draw the diagram of a dicot plant.

Q.

Which one of the following is Heterosporous?

1. Adiantum

2. Salvinia

3. Dryopteris

4. Equisetum

Q.

Explain

Diploid sporophytic

Haploid gametophytic

Q.

Explain briefly the following terms with suitable examples:-
(i) protonema
(ii) antheridium
(iii) archegonium
(iv) diplontic
(v) sporophyll
(vi) isogamy

Q.

Name a colonial form of algae?

Q. Ectocarpus and Polysiphonia exhibit haplo-diplontic life cycle.

1. True
2. False

Q.

Arrange the following events of the life cycle of Bryophytes in the correct sequence:

I) Formation of Spores, II) Gametes Formation, III) Formation of Gametophyte, IV) Fertilisation, V) Embryo Formation

1. III, IV, V, II, I

2. V, I, II, III, IV

3. I, III, IV, V, II

4. III, II, IV, V, I

Q.

Which of the following best describes the gametophyte in a plant’s life cycle?

1. The diploid generation

2. The generation that produces the gametes

3. The generation that produces spores

4. Uses meiosis within structures called sporangia

Q. Choose the correct statement regarding bryophytes:

1. The juvenile sporophyte developed from the zygote is known as protonema
2. The rhizoids in mosses and liverworts are unicellular and multicellular, respectively
3. The arrangement of leaves in mosses and liverworts is spiral and in two rows, respectively
4. The liverworts are of two types: thallose and prostrate

Q.

What is the difference between oogonium and archegonium?

Q. is the first stage of the gametophyte during the life cycle of mosses.

1. Protonema
2. Gemmae
3. Sporophyll
4. Antherozoid

Q.

Protonema is

(a) haploid and is found in mosses (b) diploid and is found in liverworts

(c) diploid and is found in pteridophytes (d) haploid and is found in pteridophytes

Q.

Is moss a gymnosperm?

Q. Which of the following bryophyte is with an elaborated mechanism of spore dispersal
1) marchantia
2) riccia
3) porella
4) funaria

Q. In Pinus, male and female reproductive structures occur:

1. On same branch
2. none of the above
3. On different plants
4. On different branches of same plant

Q. Define external fertilization. Mention its disadvantages.

Q.

Write description of thallophyta, bryophyta and pteridophyta with examples of each.

Q. Gametophyte is most developed in:

1. Fern
2. Moss
3. Pinus
4. Cycas

Q. Peat moss is another name of:

1. Sphagnum
2. Marchantia
3. Riccia
4. Dryopteris

Q. Bryophytes not only help in the formation of soil they also prevent soil erosion.

1. True
2. False

Q.

Is moss a protist?

Q.

Do all plants have the same life cycle?

Q. Which of the following forms monosporic embryo sac?

1. Oenothera type
2. Fritillaria type
   
3. Allium type
4. None of the above

Q.

Define the following.

1. Mesophytes
2. Sporangia
3. Xerophytes
4. Pentamerous flowers

Q. An alga has

1. a thallus body of only green colour
2. moss like body with simple shoots
3. plant body with distinct shoots
4. none of these

Q. Sporophyte of Funaria begins its development inside

1. archegonium
2. protonema
3. antheridium
4. capsule

Q.

Give the appropriate scientific term for the following.

$\left(f\right)$ Bryophyte used for surgical dressing.

Q. Select the incorrect statements.

$\left(a\right)$ Sporophyte of liverworts is more elaborate than that of mosses

$\left(b\right)$ Salvinia is heterosporous

$\left(c\right)$ Life of all seed plants is diplontic

$\left(d\right)$ In Pinus, male and female cones are borne on different trees

1. $a,c$
2. $a,d$
3. $b,c$
4. $a,b$

Q. A pine tree is an example of a

1. Angiosperm
2. Bryophyte
3. Gametophyte
4. Sporophyte