What is protandry? - Biology

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What is protandry?



Protandry is a condition in which anthers mature first, but the stigma of the same flower is not receptive at that time.

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Chapter 1: Reproduction in Lower and Higher Plants - Very Short Answer


SCERT Maharashtra Question Bank 12th Standard HSC Biology Maharashtra State Board
Chapter 1 Reproduction in Lower and Higher Plants
Very Short Answer | Q 4


Differentiate between 'stem tuber' and 'tuberous root'.

Vegetative propagation takes place with the help of leaves in _________ plant.

Label the parts (1) and (2) in budding of yeast cell.

…………. is a mode of asexual reproduction.
(a) Cloning
(b) Budding
(c) Pollination
(d) Germination

Choose the most appropriate answer.

A tadpole develops into an adult frog by the process of

Indicate whether the following statement is True (T) or False (F).

External fertilization takes place in frogs. ( )

Indicate whether the following statement is True (T) or False (F).

Fertilization is necessary even in asexual reproduction. ( )

Indicate whether the following statement is True (T) or False (F).

Binary fission is a method of asexual reproduction. ( )

Define asexual reproduction. Describe two methods of asexual reproduction in animals.

What is metamorphosis? Give examples.

..................... type of reproduction occurs in Hydra.

(a) Binary fission

(b) Multiple fission

(c) Budding

(d) Fragmentation

A student in viewing under a microscope a permanent slide showing various stages of asexual reproduction by budding in yeast. Draw diagrams of what he observes (in proper sequence)

What is the name of asexual reproduction method in Leishmania?

Name two plants which are propagated by layering method.

How does binary fission differ from multiple fission?

 Why does bread mould grow profusely on a moist slice of bread but not on a dry slice of bread?

Name one organism which reproduces by fission and another which reproduces by fragmentation.

A multicellular organism which reproduces by budding is :
(a) Amoeba
(b) Yeast
(c) Leishmania
(d) Hydra

The factors responsible for the rapid spreading of bread mould on slices of bread are :
(i) presence of large number of spores in air
(ii) presence of large number of thread-like branched hyphae
(iii) presence of moisture and nutrients
(iv) formation of round shaped sporangia

(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i) and (ii)
(d) (iii) and (iv)

When a broken piece of the stem of a plant X is planted in the soil, a new plant grows from it in a week's time. The leaves of plant X also have many small entities Y in their margins which can fall to the ground alone or alongwith leaves and grow into new plants.

(a) Name a plant which X could be.
(b) What are the entities Y present on the leaves of X known as?
(c) Name a plant other than X which can be reproduced from its leaves.
(d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X.
(e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains.

Briefly explain why a gardener prefers to grow certain plants vegetatively?

Write a short note on Grafting.

Multiple choice question. Tick (✓) the correct choice:

Budding is commonly seen in

  1. yeast
  2. grasses
  3. Amoeba
  4. Spirogyra

Multiple choice question. Tick (✓) the correct choice:

Reproduction or propagation by stem is common in

  1. begonia
  2. potato
  3. sweet potato
  4. Bryophyllum

State whether the following statement is true (T) or false (F):

A potato tuber is really an underground stem.


Differentiate between the following:

Binary fission and budding

Differentiate between the following:

Cutting and grafting

Define the following:


Mention the common method of reproduction in Bacteria.

Explain the process of budding in Hydra.

What is meant by asexual reproduction? 

A student was given two permanent slides, one of binary fission in Amoeba and other of budding in yeast. He was asked to identify any one difference in the nucleus of the two. One such difference, he identified correctly was

(1) Presence of one nucleus in Amoeba, two in yeast cell and one in bud. 

(2) Presence of two nuclei in centrally constricted Amoeba, one in yeast cell and one in its bud.

(3) Presence of two distant nuclei in Amoeba, one in yeast cell and two in bud.

(4) Presence of a single nucleus each in Amoeba, yeast cell and its attached bud.

Write the correct option from the given multiple options.
Vegetative propagation is performed with the help of ..........................in sweet potato.
a) root
b) stem
c) leaf
d) flower.

Explain asexual reproduction in plants.

Pranav and Preeti are twins in your class. They belong to ___________ twins type.

Gemmule formation takes place in ________.

Name the mode of reproduction process seen in yeast.

Choose the correct alternative and rewrite the following:

Fermentation is a type of ____________________.

Which of the following is a mode of asexual reproduction?

Choose the correct alternative and rewrite the following:

Ramesh observed a slide of Amoeba with elongated nuclei. It would represent _______________.

Explain the term Vegetative propagation.

What is meant by vegetative propagation? Name the vegetative parts through which Potato and Bryophyllum reproduce.

Rewrite the following statement by selecting the correct option.
When Hydra becomes matured, _________ takes place in it.

Name two flowering plants that reproduce both by seeds and by vegetative means.

Name four plants which can be propagated by stem-cutting.

Write four lines on the following: Grafting

Give the name of the plant that reproduces vegetatively by: Stem-cutting

Give the name of the plant that reproduces vegetatively by: Grafting

How is vegetative propagation economically important?

What is micropropagation?

Grafting is not possible in the monocots because they

The plants produced as a result of vegetative reproduction are

Explain, briefly two methods by which plants can be vegetatively propagated artificially.

Porogamy refers to entry of pollen tube through ____________.

Why anther is called as tetrasporangiate structure?

Name the hormone produced by unfertilised ovary responsible for enlargement of ovary into fruit.

Explain the development of male gametophyte in angiosperms (diagram is not expected).

Describe the process of fertilization in angiosperms with the help of a diagram.

Write a note on different types of endosperms in angiosperms.

Which of the following is not a type of asexual reproduction in multicellular organisms?

This method of asexual reproduction is seen in paramoecium.

Find an odd one out.


Vegetative propagation

What determines whether the two organisms of a species will be exactly similar or not?

Name the three types of asexual reproduction in unicellular organisms.

Explain the importance of the reproduction process.

Distinguish between the following.

Binary fission and Multiple fission

A piece of wet bread or bhakri kept in a humid place for 2-3 days, then

  1. What will you observe?
  2. State the scientific name of the living organism and write its characteristics.

  1. Which type of reproduction is indicated in the following diagram?
  2. Redraw the given type of reproduction in the correct sequence and explain it.

Draw a neat and labelled diagram.

Spore formation

Vegetative propagation by leaves takes place in ______.

Asexual reproduction in yeast is ______.

Asexual reproduction takes place through budding in ______.

Seeds are the product of asexual reproduction.

Yeast reproduces asexually by means of multiple fission.

By which of the following egg in female gametophyte is accompanied?

Identify the reason because of which cambium is essential for grafting in plants.

Which of the following methods of asexual reproduction are observed in lower organisms?

The asexual reproduction in bacteria occurs by ______.

Asexual reproduction is also known as ______.

Budding, in hydra, is a form of ______.

______ do not produce spores.

Spirogyra reproduces by ______.

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.

Pick the odd one out from the following on the basis of the mode of reproduction and give a reason for it.

Sugarcane, Potato, Rice, Rose

In the diagram given in Figure 12.2 label the parts marked (a), (b) and (c).

When you keep food items like bread and fruits outside for a long time, especially during the rainy season, you will observe a cottony growth on them.

What is this growth called?

When you keep food items like bread and fruits outside for a long time, especially during the rainy season, you will observe a cottony growth on them.

How does the growth take place?

In the diagram of a bisexual flower given in Figure 12.5, draw the missing part and label the parts marked (a), (b) and (c). Also, label the missing part that you draw

The symbiotic association between fungi and algae is called ______.

When one of the following is correctly matched?

The "Eyes" of the potato tuber are ______.

Which one of the following pairs is wrongly matched while the remaining three are correct?

Vegetative reproduction of Agave occurs through ______.

Seed formation without fertilization in flowering plants involves the process of ______.

Plants like (vlmus), Dandelion (Taraxacum) and members of Rose family vegetative reproduce by ______.

Methods of asexual reproduction in lower organisms include ______

Which of the following options shows two plants in which new plantlets arise from the same organ?

In the figure given below the plant bears two different types of flowers marked ‘A’ and ‘B’. Identify the types of flowers and state the type of pollination that will occur in them.

What do the following parts of a flower develop into after fertilisation?

a. Ovary ______
b. Ovules ______

Name the asexual reproductive structure of Chlamydomonas.


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