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Question
Find an odd one out.
Options
Hibiscus
Papaya
Sun-flower
Rose
Mango
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Solution
Papaya
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RELATED QUESTIONS
A student was asked to observe and identify the various parts of an embryo of a red kidney bean seed. He identified the parts and listed them as under:
I. Tegmen
II. Testa
III. Cotyledon
IV. Radicle
V. Plumule
The correctly identified parts among these are
(A) I, II and III
(B) II, III and IV
(C) III, IV and V
(D) I, III, IV and V
Name the parts labelled as A, B, C and D in the diagram given below:-
A student has to perform the experiment "To identify the different parts of an embryo of a dicot seed." Select from the following an appropriate group of seeds:
(a) Pea, gram, wheat
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State the function of flowers in the flowering plants.
How is the process of pollination different from fertilization?
Mature ovary forms the ______.
Where are a plant's sex organs located?
What is the name of female part of a flower?
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seed, embryo
(b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation
Which of the following statements are true for sexual reproduction in flowering plants?
(i) it requires two types of gametes
(ii) fertilisation is a compulsory event
(iii) it always results in the formation of zygote
(iv) offsprings formed are clones
(a) (i) and (iv)
(b) (i), (ii) and (iv)
(c) (i), (ii) and (iii)
(d) (ii), (iii) and (iv)
The correct sequence of reproductive stages occurring in flowering plants is ______
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
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(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube b from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of d contained in structure E. the fusion of C and D forms a new cell f which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F?
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
Draw a labelled diagram of a bisexual flower.
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
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.
Accessory whorls : Calyx and corolla : : essential whorls : ______________
Pollen grains from anther are transferred to the stigma.
Observe the figure below. Write functions of the labelled parts.
The male reproductive part of a flower is ______.
The essential parts of a flower are ______.
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
Which of the following is the outermost protective layer of anther?
How many middle layers are generally present in the wall of the anther lobes?
The 3-celled egg apparatus at the micropylar end comprises of ______
Sperm and egg nuclei fuse due to ______.
Pineapple fruit develops from ______.
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
In human beings, fertilization occurs in the ______
Pollen grains are produced by ______
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
Double fertilization means ______.
Type of sexual reproduction is ______.
