Reproduction

Q.

Why are parasitic plants called partial heterotrophic

Q.

Among China rose, mustard, brinjal, potato, guava, cucumber, onion, and tulip how many plants have superior ovary?

1. Three

2. Four

3. Six

4. Five

Q.

In human beings, the correct sequence of events during reproduction is

1. gamete formation, fertilization, zygote, embryo

2. embryo, zygote, fertilization, gamete formation

3. fertilization, gamete formation, embryo, the zygote

4. gamete formation, fertilization, embryo, the zygote

Q.

Name the roots of the plants that grow in marshy areas.

Q.

Reduction in chromosome number occurs during?

Q.

Are parasites heterotrophs?

Q.

Mention five features of asexual reproduction. [5 MARKS]

Q.

What is the mode of reproduction in potatoes, ginger and turmeric?

1. Pollination

2. Fertilization

3. Sporulation

4. Vegetative propagation

Q.

What happens to the petals, sepals, and stamens of flowers after fertilization?

Q.

Do ferns reproduce asexually?

Q.

How does a hydra reproduce asexually?

1. By multiple fission

2. Transverse binary fission

3. Budding

4. Asymmetrical binary fission

Q.

Exchange of genetic material takes place in asexual reproduction.

1. True
2. False

Q. Which of the following is not an essential life process?

1. Circulation
2. Nutrition
3. Respiration
4. Reproduction

Q.

Do you get more DNA from your mother or father?

Q. Fusion of male and female gametes results in the formation of ________ .

1. egg
2. zygote
3. embryo
4. foetus

Q.

Insect-pollinated flowers are brightly colored.

1. True
2. False

Q.

How is sexual reproduction characterized?

Q. How does seed dispersal help plants?

1. New plants can get more nutrients, light and space to grow.
2. New plants will make double the oxygen for the environment.
3. New plants can grow in the same place as their parents.
4. New plants will produce more fruit than the older plants if they are spread out.

Q.

What is the difference between sexual reproduction and asexual reproduction

Q.

Offspring formed as a result of sexual reproduction exhibit more variations because

1. Sexual reproduction is a lengthy process

2. Genetic material comes from two parents of the same species

3. Genetic material come from two parent of different species

4. Genetic material comes from many parents

Q.

What happens to the following after fertilization?

(a) ovules

(b) calyx

(c) petals

(d) )stamens

Q.

George de Mestral was a Swiss Engineer who invented the Velcro after observing a Burdock Burr which is a type of seed (See image below). What is the mode of dispersal of this seed?

1. By being eaten by animals

2. By wind

3. By water

4. By sticking to animals

Q.

What are the disadvantages of asexual reproduction?

Q.

The organs responsible for reproduction in most of the plants are called _______.

1. roots

2. stems

3. flowers

4. leaves

Q. Mention two significance of vegetative propagation.

Q. Choose the odd one out.

1. Venusflytrap
2. Cuscuta
3. Utricularia
4. Drosera

Q. How many parents are required for sexual reproduction?

1. 4
2. 1
3. 0
4. 2

Q. What is reproduction? What is its purpose? [2 MARKS]

Q.

Three matured air dried bean seeds are taken and tied to a glass slide at three positions as shown. This slide is kept in a beaker containing water in a manner that the top seed is well above water, the middle one is just at the water level and the bottom one is deep in water. The experimental set up is left in warm place for a few days. What will you notice by the end of the process?

1. Top, bottom, and middle will germinate

2. Top and middle will germinate and the bottom does not germinate

3. Bottom and top will germinate and the middle one does not germinate

4. The middle will germinate, the top will not germinate and the bottom one stops germinating after the emergence of the radicle.

Q.

_______ is a Neural Nets way of classifying inputs.

1. Forward Propagation

2. Classification

3. Learning

4. Activation.