Advertisements
Advertisements
प्रश्न
Choose the correct alternative and rewrite the following:
Ramesh observed a slide of Amoeba with elongated nuclei. It would represent _______________.
विकल्प
Binary fission
Budding
Multiple fission
None of the above.
उत्तर
Binary fission
APPEARS IN
संबंधित प्रश्न
Yeast reproduces by _________.
(a) spore formation
(b) multiple fission
(c) fragmentation
(d) budding
Explain the term “Regeneration” as used in relation to reproduction of organisms
Explain how non-reproductive structures protect themselves and what is the function of the structures released from the 'blobs' in Rhizopus.
List two advantages of vegetative propagation.
Study the following diagrams showing various stages of binary fission in Amoeba:
The correct sequence of these diagrams should be:
(A) I, IV, III, II, V
(B) I, III, IV, II, V
(C) I, II, IV, III, V
(D) I, II, III, IV, V
State two disadvantages of vegetative propagation?
What is the name of asexual reproduction method in Leishmania?
State two advantages of grafting method of artificial propagation of plants.
What care should be taken while making a cutting from a plant?
An organism which may be considered to be a kind of plant and reproduces by budding is :
(a) Paramecium
(b) Bread mould
(c) Hydra
(d) Yeast
Fill in the following blank with suitable word :
The process of fusion of gametes is called .............
Fill in the blank:
Budding is a kind of _________ reproduction.
Fill in the blank:
Yeast cells reproduce by ________.
Differentiate between the following:
Cutting and grafting
Choose the correct statement(s) on budding in yeast from the following :
I. A parent cell divides into two or more daughter cells and here the parent identity is lost.
II. In this the elongated nucleus divides to form two or more daughter nuclei.
III. A bud arises from a particular region on a parent body.
IV. After detaching from the parent body the bud grows into a new independent individual.
(A) I only
(B) III only
(C) II and III only
(D) III and IV only
Name the method by which hydra reproduces. Is this method sexual or asexual?
Select the correct statements for the process of budding in yeast:
I. A bud arises from a particular region on a parent body.
II. A parent cell divides into two daughter cells, here the parental identity is lost.
III. Before detaching from the parent body a bud may form another bud.
IV. A bud when detaches from the parent body grows into a new individual.
(A) I, II and III
(B) II, III and IV
(C) III, IV and I
(D) IV, I and II
List two advantages of vegetative reproduction practiced in case of an orange plant.
After observing the prepared slides of binary fission in Amoeba and budding in yeast following observations were reported:
(a) Single cells of Amoeba and yeast were undergoing binary fission and budding respectively.
(B) Cytokinesis was observed in the yeast cell.
(C) Elongated nucleus was dividing to form two daughter nuclei in Amoeba.
(D) A chain of buds were observed due to reproduction in Amoeba.
The correct observation(s) is/are:
(A) a and c
(B) b only
(C) c and d
(D) d, a and c
In which of the following figures is budding not shown?
(A) I
(B) II
(C) III
(D) IV
A yeast cell in which budding occurs was seen to have:
(1) one bud cell
(2) two bud cell
(3) three bud cell
(4) a chain of bud cells
Explain asexual reproduction in plants.
In hydra the type of reproduction is ___________.
What is meant by vegetative propagation? Name the vegetative parts through which Potato and Bryophyllum reproduce.
Write four lines on the following: Budding
How is vegetative propagation economically important?
A method in which roots are induced on the stem while it is still attached to the parent plant is called
Seeds are the product of asexual reproduction.
By which of the following egg in female gametophyte is accompanied?
Hydra usually reproduces by ______
In Spirogyra, asexual reproduction takes place by
Length of pollen tube depends on the distance between
In Figure, the parts A, B and C are sequentially
Which of the following statements is/are true for sexual reproduction in plants?
(i) Plants are obtained from seeds.
(ii) Two plants are always essential.
(iii) Fertilisation can occur only after pollination.
(iv) Only insects are agents of pollination.
Choose from the options given below.
Rajesh observed a patch of greenish black powdery mass on a stale piece of bread.
Name the organism responsible for this and its specific mode of asexual reproduction.
Mustard was growing in two fields- A and B. While Field A produced brown coloured seeds, field B produced yellow coloured seeds.
It was observed that in field A, the offsprings showed only the parental trait for consecutive generations, whereas in field B, majority of the offsprings showed a variation in the progeny.
What are the probable reasons for these?
Which one of the following pairs is wrongly matched while the remaining three are correct?
Plants like (vlmus), Dandelion (Taraxacum) and members of Rose family vegetative reproduce by ______.
Match the columns:
| Column A (Asexual) | Column B (Examples) | ||
| (a) | Spore formation | (1) | Spirogyra |
| (b) | Conidia formation | (2) | Yeast |
| (c) | Fragmentation | (3) | Chlamydomonas |
| (d) | Budding | (4) | Penicillium |
