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