Class XII Biology: Pollination Methods and Plant Examples

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Which of the following birds aid in pollination?

Parrot

Crow

Sunbirds (correct)

Bulbul

What type of flowers are typically pollinated by bats?

Large white flowers

Dull-colored flowers with a strong aroma (correct)

Small, colorful flowers

Fragrant flowers with minimal nectar

Which animals are responsible for pollinating Arisaema plants?

Ants

Bees

Snails (correct)

Bats

What is the significance of pollination?

Required for fertilization and seed production Signup and view all the answers

Which of the following is a characteristic of hydrophily?

Pollination by water Signup and view all the answers

What is anemophily?

Pollination by wind Signup and view all the answers

Which flowers are anemophilous?

Small, inconspicuous flowers Signup and view all the answers

'Malacophily' refers to pollination by which organism?

Snails Signup and view all the answers

Where does fertilization take place in the female reproductive system?

Fallopian tube Signup and view all the answers

What is the role of the sperm's acrosome during fertilization?

Blocking entry of other sperms Signup and view all the answers

What is the result of the fusion between the haploid male gamete and the haploid female gamete?

Production of a diploid zygote Signup and view all the answers

What ensures that only one sperm can fertilize a single ovum?

Secretions of the acrosome Signup and view all the answers

Which part of the female reproductive system releases the ovum during ovulation?

Ovary Signup and view all the answers

What determines the sex of the fetus?

Sex chromosome in the sperm Signup and view all the answers

What is the chromosome count in a primary spermatocyte?

46 Signup and view all the answers

Which cells are embedded in Sertoli cells during spermiogenesis?

Spermatids Signup and view all the answers

What is the chromosome count in a spermatozoon (spermatozoa)?

23 Signup and view all the answers

Which process involves the maturation of spermatids into spermatozoa?

Spermiogenesis Signup and view all the answers

How many chromosomes do spermatids contain?

23 Signup and view all the answers

What is the role of spermiation in spermatogenesis?

Release of sperms from seminiferous tubules Signup and view all the answers

Where does Follicle Stimulating Hormone (FSH) act in males?

On Sertoli cells Signup and view all the answers

What is the main role of Luteinizing Hormone (LH) in males?

Stimulating androgen synthesis in Leydig cells Signup and view all the answers

Class XII Biology: Pollination Methods and Plant Examples

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Questions and Answers

Which of the following birds aid in pollination?

What type of flowers are typically pollinated by bats?

Which animals are responsible for pollinating Arisaema plants?

What is the significance of pollination?

Which of the following is a characteristic of hydrophily?

What is anemophily?

Which flowers are anemophilous?

'Malacophily' refers to pollination by which organism?

Where does fertilization take place in the female reproductive system?

What is the role of the sperm's acrosome during fertilization?

What is the result of the fusion between the haploid male gamete and the haploid female gamete?

What ensures that only one sperm can fertilize a single ovum?

Which part of the female reproductive system releases the ovum during ovulation?

What determines the sex of the fetus?

What is the chromosome count in a primary spermatocyte?

Which cells are embedded in Sertoli cells during spermiogenesis?

What is the chromosome count in a spermatozoon (spermatozoa)?

Which process involves the maturation of spermatids into spermatozoa?

How many chromosomes do spermatids contain?

What is the role of spermiation in spermatogenesis?

Where does Follicle Stimulating Hormone (FSH) act in males?

What is the main role of Luteinizing Hormone (LH) in males?

Which part of the sperm contains enzymes that aid in fertilization?

What provides energy for the vigorous motility of the sperm?

Approximately how many sperms are released during ejaculation?

What is the composition of semen?

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