Fragmentation

Q. The main plant body of Bryophyte is:

1. Haploid and produce gamete
2. Haploid and produces spores
3. Diploid and produces spores
4. Diploid and produces gamete

Q. Consider the following statements–
I. Mycelium is branched and septate
II. The asexual spores are generally not formed
III. Vegetative reproduction takes places by fragmentation
IV. Sex organs are absent, but sexual reproduction place by somatogamy
V. Karyogamy and meiosis takes place in basidium four haploid basidiospores
VI. Basidia are arranged in fruiting bodies called basidiocarp

The above statements are assigned to-

1. Sac fungi
2. Bracket fungi
3. Imperfect fungi
4. Club fungi

Q. Transverse binary fission occurs in

1. Paramecium
2. Ceratium
3. amoeba
4. Euglena

Q.

Explain the process of regeneration in Planaria. How is this process different from reproduction?

Q. Which of the following organism produce gemmules as asexual reproductive structure?

1. Chlamydomonas
2. Hydra
3. Penicillium
4. Sponges

Q. Gemmae are vegetatively reproducing structures of

1. Bryophytes
2. Pteridophytes
3. All of the above
4. Algae

Q.

What does a seed contain?

Q. Match the following
$\begin{array}{cc}\text{A-Man}& \text{i- Diptera}\\ \text{B-Housefly}& \text{ii- Anacardiaceae}\\ \text{C-Mango}& \text{iii- Poales}\\ \text{D-Wheat}& \text{iv- Hominidae}\end{array}$

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

Q. In some plants buds can grow where it normally would not. One such location may be in the margins of leaves. Name a plant where such buds are used as vegetative propagules-

Q.

The nucleus of parent divides by repeated amitosis into many nuclei, each nucleus takes a bit of cytoplasm and forms a daughter cell. This process is called -

1. Spore formation

2. Multiple fission

3. Binary fission

4. Budding

Q.

Arrange the following organisms with their correctly matched asexual structures.

(i) Hydra and yeast	(a) Gemmules
(ii) Chlamydomonas	(b) Conidia
(iii) Sycon	(c) Buds
(iv) Penicillium	(d) Zoospores

1. (i)➞(c), (ii)➞(d), (iii)➞(a), (iv)➞(b)
2. (i)➞(d), (ii)➞(c), (iii)➞(b), (iv)➞(a)
3. (i)➞(a), (ii)➞(d), (iii)➞(c), (iv)➞(b)
4. (i)➞(b), (ii)➞(c), (iii)➞(d), (iv)➞(a)

Q.

Match the following

Column A Column B

i. Binary fission a.Cells produced are of unequal sizes

ii.Budding b.Cells produced are of the same size

iii.Fragmentation c.Gametes are produced

iv.Sexual reproduction d.Regeneration of whole organism from a split part

1. (i) a , (ii) b, (iii) d, (iv) c

2. (i) b , (ii) a, (iii) d, (iv) c

3. (i) d , (ii) b, (iii) a, (iv) c

4. (i) c , (ii) d, (iii) a, (iv) b

Q.

Meaning of fragmentation

Q. What is haploid, diploidploid, oogamous, anisogamous, aplanospore, zoospores, conidiaspore, sporangiospore, oospores, ascospores, basidiospores, gamete, gametophyte, meosis, mytosismytosis. pls explain

Q. Gemmae in marchantia develop in

1. Ventral surface of its thallus
2. Dorsal surface of its thallus
3. Gemma cups
4. None of the above

Q. Gemmae in Marchantia develop in

1. Ventral surface of its thallus
2. Dorsal surface of its thallus
3. Gemma cups
4. None of the above

Q.

Where is gemma located?

Q. In the embryonic development of the avian heart, it is observed that it passes through two chambered fish like hearts, three chambered frogs like heart and finally four chambered stages. This hypothesis is directed to which of the following options?

1. Theory of special creation
2. Theory of panspermia
3. Biogenetic law
4. Theory of chemical evolution

Q. Gemmae are present in:

1. Some Liverworts
2. Mosses
3. Pteridophytes
4. Some Gymnosperms

Q. Gemmae are multicellular green structures for vegetative propagation. These are found inside gemma cups in _________________.

1. Marchantia thallus
2. Funaria protonema
3. Riccia capsule
4. Polytrichum thallus

Q. Select the option that correctly identifies A, B and C in the given figure of female thallus of Marchantia.

1. A-Antheridiophore, B-Gemma cup, C-Rhizoids
2. A-Antheridiophore, B-Rhizoids, C-Gemma cup
3. A-Archegoniophore, B-Gemma cup, C-Rhizoids
4. A-Archegoniophore, B-Rhizoids, C-Gemma cup

Q.

Give an example of bipartite fruit.

Q.

How is reproduction in hydra different from that in amoeba?

Q. Why do complex multicellular organisms do not reproduce by fragmentation process?

Q.

Find the odd one out.

1. Corms

2. Bulbs

3. Gemmae

4. Rhizomes

Q. Gemmae are asexual reproductive bodies of ___________.

1. brown algae
2. mosses
3. red algae
4. liverworts

Q. What happens when:
(i) Planaria gets cut into two pieces?
(ii) A mature spirogyra filament attains considerable length?
(iii) On maturation sporangia burst?

Q. The process of fragmentation takes place in___________

1. Flatworms
2. Roundworms
3. Both A and B
   
4. Yeast

Q. In tobacco plants, the male gamates have twenty four chromosomes.What is the number of chromosomes in the females gamete? What is the number of chromosomes in the zygote?

Q. Gemmae are asexual reproductive bodies of

1. Mosses
2. Both B and C
3. Liverworts
4. Algae