Flash Card
In humans, sperm production occurs in the ............ .
Haploid male gamete fuses with haploid female gamete to form .......... zygote.
Spirogyra reproduces asexually by the method
Fragmentation is observed in
In case of plants like sugarcane and grasses, ........... occurs with the help of buds present on nodes.
During seed germination ................ develops by using food stored in endosperm of the seed.
Twins born with some parts of body joined to each other are known as
In ..............., the parent cell divides to form two similar daughter cells. It occurs either by mitosis or amitosis.
BInary fussion occurs by
Which of the following is NOT the paired structure in human male reproductive system?
Menopause generally occurs at the age of about
...............have filamentous body and generally grow on wet bread kept in a humid place.
............ present in semen gives energy to the sperms.
Menstrual cycle is a natural process, controlled majorly by ............... hormones.
Each pollen tube contains
The number of chromosome gets ............ in meiosis.
Calyx and ................ are called as accessory whorls.
In angiosperms, second male gamete fuses with two polar nuclei to form
The property of complete regeneration is observed in
Which of these is the method of reproduction of yeast?
Spores released from sporangium of Mucor germinate in moist and warm place and form new fungal colony. It shows
............... is the structure inside which spores of bread mould are formed.
Testes are present in the ............, outside the abdominal cavity.
............. reproduces from buds on the leaf margin.
Amoeba shows both binary fission and
During unfavourable or adverse conditions Amoeba forms a protective covering around its plasma membrane to form a
In asexual reproduction there is no involvement of
Ovulation occurs usually on .......... day of menstrual cycle.
Identify the CORRECT statement from the following.
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ........... type of reproduction.
Complete the analogy and select the correct option. Ovary: Fruit:: Ovules:
Which of these is a sexually transmitted disease caused by bacteria?
During fertilization in plants, the two male gametes are released by the pollen tube in .......... .
Seminal vesicles release their secretion in
The length of a sperm is about ............. micrometers.
Ovary is present at the basal end of each
A bisexual flower shows the presence of
Germ cells present in the ........... divide by meiosis to produce sperms.
By which of the following method Paramoecium divides?
During asexual reproduction, cells divide by the process of
Many flowers have a stalk for support and it is called as
Implantation of embryo occurs in .... .
Euglena divides by
Which of these plant parts become sticky during pollination?
Androecium and are the essential whorls.
Embryonic development in humans is completed approximately within ......... months after the fertilization.
Members of corolla are called as .................. and they are variously colored.
............. is the union of sperm and ovum to initiate formation of a zygote.
Under favourable condition, Hydra reproduces by the process of
In which of these techniques, fertilization is brought about in the test-tube and the embryo formed is implanted in uterus of woman at appropriate time?
Each embryo sac consists of
