How do Organisms Reproduce?
Subject: General Science
Sample Practice Questions
Question 1: What is the tube that carries the egg from the ovary to the uterus called?
- Ureter
- Vas deferens
- Fallopian tube
- Urethra
Explanation: The egg is carried from the ovary to the uterus through a thin oviduct or fallopian tube. Fertilisation occurs in the fallopian tube when sperm meets the egg.
Question 2: What is the process of attachment of the embryo to the uterine wall called?
- Fertilisation
- Implantation
- Gestation
- Parturition
Explanation: The embryo is implanted in the lining of the uterus where it continues to grow and develop organs to become a foetus.
Question 3: Which of the following is NOT a sexually transmitted disease?
- Gonorrhoea
- Syphilis
- HIV-AIDS
- Typhoid
Explanation: Typhoid is not a sexually transmitted disease. Gonorrhoea, syphilis (bacterial), and HIV-AIDS (viral) are sexually transmitted diseases.
Question 4: Which organism reproduces by multiple fission?
- Amoeba
- Yeast
- Plasmodium
- Leishmania
Explanation: The malarial parasite, Plasmodium, divides into many daughter cells simultaneously by multiple fission.
Question 5: Which method of contraception can also help prevent sexually transmitted diseases?
- Oral pills
- Copper-T
- Condoms
- Surgical methods
Explanation: Condoms help prevent the transmission of many sexually transmitted infections to some extent, in addition to preventing pregnancy by creating a mechanical barrier.
Question 6: What is the basic event in reproduction at the cellular level?
- Creation of new proteins
- Creation of a DNA copy
- Creation of new organelles
- Creation of new cells
Explanation: The text states: 'A basic event in reproduction is the creation of a DNA copy.' DNA contains the information for inheritance of features from parents to the next generation.
Question 7: What are the thread-like structures of bread mould called?
- Sporangia
- Hyphae
- Spores
- Rhizoids
Explanation: The thread-like structures that develop on bread are the hyphae of the bread mould (Rhizopus). The sporangia are the tiny blob-on-a-stick structures involved in reproduction.
Question 8: What is the transfer of pollen from the anther to the stigma called?
- Fertilisation
- Pollination
- Germination
- Seed formation
Explanation: Pollination is the transfer of pollen grains from the stamen (anther) to the stigma of the pistil. It can be self-pollination or cross-pollination.
Question 9: What is the surgical method of blocking the vas deferens in males called?
- Tubectomy
- Vasectomy
- Hysterectomy
- Circumcision
Explanation: Vasectomy is the surgical method where the vas deferens in the male is blocked, preventing sperm transfer. Tubectomy is the similar procedure for blocking the fallopian tubes in females.
Question 10: Which of the following is a unisexual flower?
- Hibiscus
- Mustard
- Papaya
- Rose
Explanation: Papaya is a unisexual flower, meaning it contains either stamens (male) or pistil (female). Hibiscus and mustard are bisexual flowers containing both reproductive parts.