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प्रश्न
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
उत्तर
Lymph flows in one direction.
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संबंधित प्रश्न
Name the parts A, B and C shown in the diagram and write their functions.
A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below:
Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.
On examining the list the teacher remarked that only three parts are correct. Select three correct parts from the above list:
(a) Testa, Radicle, Cotyleddon
(b) Tegmen, Radicle, Micropyle
(c) Cotyledon, Plumule, Testa
(d) Radicle, Cotyledon, Plumule
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
Give one example of a unisexual flower.
Name the male part of the flower.
Where are a plant's sex organs located?
What is the name of female organ of a flower (other than carpel)?
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
Fill in the following blank with suitable word :
The name of the structure in the flower in which the male gamete is formed is...........
Fill in the following blank with suitable word :
The.......... at the base of the carpel contains egg cells.
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Give some examples of different modes of fertilisation in nature?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
The correct sequence of reproductive stages occurring in flowering plants is ______
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
Fill in the blank:
Seeds are formed from________.
Mention the function of Stigma.
Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.
Explain the process of fertilisation in flowers.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
What is phototropism?
Prepare a slogan for campaign against female foeticide.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
Find an odd one out.
Calyx : Sepals : : Corolla : ________________
Bisexual : Hibiscus : : Unisexual : ___________
Pollen grains from anther are transferred to the stigma.
What does germination mean?
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
Which of the following is the outermost protective layer of anther?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
Flowers showing ornithophily show few characteristic like ______.
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
Sketch and label the essential and accessory whorls of flower.
In a plant flower the female whorl is ______.
Type of sexual reproduction is ______.
Explain the post fertilization changes that occur in the ovary of a flower.
