Exocrine Glands

Q.

What do exocrine glands secrete?

Q. Peristome teeth in Funaria occur in how many whorls?

1. Four
2. Two
3. One
4. Three

Q. The egg is present in the

1. neck
2. stalk
3. venter
4. jacket

Q. Choose the incorrect statement from the following regarding bryophytes:

1. Liverworts have male and female sex organs on the same thallus
2. The male and female sex organs are mostly on the same thallus in mosses
3. Gemmae cups, protonema and archegonium are haploid
4. Spore mother cells and zygote are diploid

Q. Choose the incorrect statement from the following regarding bryophytes:

Q. The main body of the plants in bryophytes have

1. two sets of chromosomes
2. one pair of chromosomes
3. two pairs of chromosomes
4. one set of chromosomes

Q. Rearrange the following events starting from the formation of the zygote in Marchantia :
I. Formation of sporophyte
II. Spore germination
III. Formation of gametophyte
IV. Gamete formation
V. Reductional division
VI. Formation of spores
VII. Syngamy

1. V→IV→VII→II→I→III→VI
2. I→II→III→IV→V→VI→VII
3. VII→I→V→VI→II→III→IV
4. I→V→VI→II→III→IV→VII

Q. The life cycle in bryophytes is

1. diplontic
2. meiotic
3. haplontic
4. haplo-diplontic

Q.

Name two exocrine glands.

Q. Rearrange the following events starting from the formation of the zygote in Marchantia :
I. Formation of sporophyte
II. Spore germination
III. Formation of gametophyte
IV. Gamete formation
V. Reductional division
VI. Formation of spores
VII. Syngamy

1. VII→I→V→VI→II→III→IV
2. V→IV→VII→II→I→III→VI
3. I→V→VI→II→III→IV→VII
4. I→II→III→IV→V→VI→VII

Q. Choose the incorrect statement from the following about the fertilisation in bryophytes:

1. The sporophyte is dependent on the gametophyte and produces spores
2. Isogamous fertilisation happens in bryophytes
3. Antherozoid and egg are haploid
4. The embryo forms the sporophytes and is diploid

Q. The antherozoids are produced from the antheridium by

1. meiosis
2. fragmentation
3. binary fission
4. mitosis

Q. Antheridium and archegonium produce X and Y. Identify X and Y.

1. X-non-motile antherozoids, Y-biflagellate antherozoids
2. X-biflagellate antherozoids, Y-non-motile antherozoids
3. X-biflagellate antherozoids, Y-egg
4. X-non-motile antherozoids, Y-egg

Q. The correct description of sporophyte of Marchantia and gametophyte of a fern is:

1. Both are free living structures
2. The sporophyte of Marchantia is diploid while the gametophyte of fern is haploid
3. Both represent the dominant generation in their respective life cycles
4. Both lack vascular tissues

Q. Choose the incorrect statement from the following about the fertilisation in bryophytes:

1. The embryo forms the sporophytes and is diploid
2. Isogamous fertilisation happens in bryophytes
3. The sporophyte is dependent on the gametophyte and produces spores
4. Antherozoid and egg are haploid

Q.

In which plant, the gametophytic phase is main and the sporophytic phase is subsidiary?

1. Pteridophytes

2. Gymnosperms

3. Angiosperms

4. Bryophytes

Q. The main plant body of the bryophyte is

1. gametophyte and haploid
2. gametophyte and diploid
3. sporophyte and diploid
4. sporophyte and haploid

Q. Choose the incorrect statement from the following about the fertilisation in bryophytes:

1. Antherozoid and egg are haploid
2. The embryo forms the sporophytes and is diploid
3. Isogamous fertilisation happens in bryophytes
4. The sporophyte is dependent on the gametophyte and produces spores

Q. The sporophyte in liverwort is differentiated into

1. rhizoids, thallus and capsule
2. thallus, seta and capsule
3. foot, thallus and seta
4. foot, seta and capsule

Q.

An example of merocrine gland is______.

1. Pituitary gland

2. Pineal gland

3. Salivary gland

4. Pancreas

Q. In bryophytes, diploid chromosome number occurs in:

1. Gametophyte
2. Spore
3. Gamete nuclei
4. Spore mother cells

Q. The main body of the plants in bryophytes have

1. two pairs of chromosomes
2. two sets of chromosomes
3. one pair of chromosomes
4. one set of chromosomes

Q. Antherozoids are

1. male gametophyte in mosses.
2. male sex organ in bryophytes.
3. male gametes in bryophytes.
4. asexual spores present in Rhodophyceae.

Q. Gametophyte is most developed in:

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

Q.

Read the following statements 1-5 and answer the question which follows them:

1. In liverworts, mosses and ferns gametophytes are free living.

2. Gymnosperms and some ferns are heterosporous.

3. Sexual reproduction in Fucus and Volvox is oogamous.

4. The sporophyte in liverworts is more elaborate than that in mosses.

5. Both Pinus and Marchantia are dioecious.

Which of the above statements are correct?

1. 2 and 5

2. 1, 2 and 3

3. 1, 3 and 4

4. 1 and 5

Q. In bryophytes and pteridophytes, transport of male gamete requires :

1. Water
2. Insects
3. Wind
4. Birds

Q. Consider the following statements with respect to bryophytes and choose the most appropriate answer.

1. Water is not required for fertilization.
2. Gametophyte shows foot, seta and capsule.
3. Thallus is a sporophyte.
4. Gemmae are reproductive structures.

Q.

Stalked sex organs are found in:

Q. Which of the following statement is not true for bryophytes?

1. They lack tracheids and sieve tubes
2. They are photosynthetic
3. Their spore germinates to produce gametophyte
4. They undergo meiosis to produce sporophyte

Q. The egg is present in the

1. stalk
2. jacket
3. neck
4. venter