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Pollen tube reaches the embryo sac via style. - Science and Technology 2

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Question

Pollen tube reaches the embryo sac via style.

Options

  • True

  • False

MCQ
True or False

Solution

True

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Chapter 3: Life Processes in Living Organisms Part - 2 - Write true or false

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SCERT Maharashtra Science and Technology 2 [English] 10 Standard SSC
Chapter 3 Life Processes in Living Organisms Part - 2
Write true or false | Q 1

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RELATED QUESTIONS

Answer the following question.

What is pollination? Explain the different types of pollination.


A student identified the various parts of an embryo of a gram seed and listed them as given below :

(I) Testa

(II) Plumule

(III) Radicle

(IV) Cotyledon

(V) Tegmen

Out of these the actual parts of the embryo are :

(A) I, II, III

(B) II, III, IV

(C) III, IV, V

(D) II, IV, V


Give one example of a unisexual flower.


Write the names of those parts of a flower which serve the same function as the following do in the animals :

(i) testis,

(ii) sperm,

(iii) ovary,

(iv) egg


Name the male part of the flower.


 Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.


What is made in anther of a flower?


Explain the term 'fertilisation'.


What type of plants reproduce by sexual reproduction method?


What is pollination? How does pollination occur?


What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?


(a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
(b) What name is given to (i) all the petals of a flower, and (ii) all the sepals of a flower?
(c) What are (i) stamen, and (ii) carpel, in a flower?
(d) What is the other name of carpel of a flower?
(e) What is the name of yellow powdery substance present in the anther of a flower?


Which of the following statements are true for flowers?
(i) Flowers are always bisexual.
(ii) They contain sexual reproductive organs.
(iii) They are produced in all groups of plants.
(iv) after fertilization they give rise to fruits.


In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.


In what ways is fertilisation in a plant different from fertilisation in a human?


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

Unisexual flowers are found in

  1. mulberry
  2. mustard
  3. pea
  4. sunflower

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

Stamens make egg cells.


What are the male and female gametes in a flowering plant?


What part is played by stamens and carpels in reproduction?


The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :

A. Soak the seeds in plain water and keep them overnight.

B. Cut open the soaked seed and observe its different parts.

C. Take some healthy seeds in a petri-dish.

D. Drain the excess water, cover the seeds with a wet cotton cloth and leave them as it is for a day.

The correct sequence of these steps is

(a) C, A, D, B

(b) C, D, A, B

(c) A, C, D, B

(d) A, C, B, D


Prepare a slogan for campaign against female foeticide.


A student is observing the temporary mount of a leaf peel under a microscope. Draw a labelled diagram of the structure of stomata as seen under the microscope


Differentiate between self-pollination and cross-pollination.


Pollen grains are formed by _________ division in locules of anthers.


Calyx : Sepals : : Corolla : ________________


Write the functions of sepals


Give scientific reason.

Flower is a structural unit of sexual reproduction in plants. 


Which of the following is the outermost protective layer of anther?


Identify the female gametophyte in angiosperms.


Sperm and egg nuclei fuse due to ______.


In a flowering plant, archesporium gives rise to ______.


What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?


The process of release of eggs from the ovary is called ______ 


Variations occur as a result of ______ 


The ovaries of different flowers may contain


Double fertilization is exhibited by ______


Double fertilization means ______.


Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.


  • Assertion: Primary endosperm nucleus is diploid.
  • Reason: It is the product of double fertilisation.

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