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प्रश्न
Type of sexual reproduction is ______.
विकल्प
Fragmentation
Regeneration
Gamete formation
Budding
उत्तर
Type of sexual reproduction is Gamete formation.
Explanation:
Sexual reproduction is always accomplished with the assistance of two germ cells. Those two germ cells are female gametes and male gametes. Meiosis is the process by which gametes are formed. The number of chromosomes is reduced to half during meiosis, resulting in the formation of haploid gametes.
Notes
Gamete formation is a process involved in sexual reproduction. It is not a type of sexual reproduction.
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संबंधित प्रश्न
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
(b) Red kidney bean, maize, gram
(c) Maize, wheat, red kidney bean
(d) Red kidney bean, pea, gram
Answer the following question.
State significance of pollination.
Give one example of a unisexual flower.
The fusion of male and female gametes is termed as ______.
State the name of the functional unit concerned with sexual reproduction.
Name the male part of the flower.
Fill in the following blank with suitable word :
The.......... at the base of the carpel contains egg cells.
Explain the terms 'self pollination'
What is pollination? How does pollination occur?
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
In the figure given alongside, the parts marked A, B and C are sequentially :
(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule
The correct sequence of reproductive stages occurring in flowering plants is ______
Put a tick mark (✓) against the correct alternative in the following statement
Reproductive whorls of a flower are:
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
Find the odd-one out, giving reason:
Anther, pollen grain, ovule male gamete
Mention the function of Anther.
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.
Explain the process of fertilisation in flowers.
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
Describe an activity to demonstrate phototropism.
Differentiate between self-pollination and cross-pollination.
What is meant by pollination?
Write the functions of sepals
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
Where does the endothecium layer of anther lobes is present?
Antipodal cells are present towards the ______ in an anatropous ovule.
Generally, in a pollen tube, which of the following moves to the tip of the tube?
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 ______.
In a flowering plant, archesporium gives rise to ______.
The seed that contains the future plant is called the ______
Pollen grains are produced by ______
The ovaries of different flowers may contain
Sketch and label the essential and accessory whorls of flower.
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
Given below is a diagram of a germinating seed. Label the parts that:
- gives rise to future shoot.
- gives rise to future root system.
- stores food.
