Science : Ch 08 – How do Organisms Reproduce

Fertilisation is the process of

The length of pollen tube depends upon the distance between:

Factors responsible for the rapid spread of bread mould on slices of bread are:

1. Large number of spores
2. Availability of moisture and nutrients in the bread
3. Presence of tubular branched hyphae
4. Formation of round shaped sporangia

During adolescence, several changes occur in the human body. mark one change from the following associated with sexual maturation in boys:

Which among the following statements are true for sexual reproduction in fowering plants?

1. It requires two types of gametes.
2. Fertilisation is a compulsory event.
3. It always results in the formation of zygote.
4. Offsprings formed are clone

Characters transmitted from parents to ofspring are present in:

Slides of binary fission in Amoeba and budding in yeast were given for observa group of students. Some of the observations reported by the group are given below:

1. Cytokinesis was observed in the yeast cell.
2. A chain of buds were observed in Amoeba.
3. Single cell of Amoeba and single cell of yeast were undergoing binary fission and budding respectively
4. Elongated nucleus was dividing to form two daughter nuclei in Amoeba

What is the mode of asexual reproduction in hydra?

What is the mode of asexual reproduction in Amoeba?

Which of the following is a bacterial STD?

In flowers,what is the female reproductive part called as?

A pair of long convoluted tubes that carry ova or eggs from the ovary to the uterus is known as

The site of fertilization of the ovum takes place is

Which of the following is surgical method of birth control in females?

Total number of chromosomes present in human beings are