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AIIMS (All India Institute of Medical Sciences) Biology: Questions 237 - 242 of 467
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Question 237
Appeared in Year: 2007
Question MCQ▾
Mesogamy is [UP CPMT]
Choices
Choice (4) | Response | |
---|---|---|
a. | Fusion of physiologically similar and morphologically different gametes | |
b. | Entry of pollen tube through integuments | |
c. | Fusion of male and female gametes | |
d. | Question does not provide sufficient data or is vague |
Question 238
Appeared in Year: 2004
Question MCQ▾
Apogamy is [Uttaranchal PMT]
Choices
Choice (4) | Response | |
---|---|---|
a. | Reproduction of virus | |
b. | Development of bacteria | |
c. | Failure of fusion of gametes | |
d. | None of the above |
Question 239
Appeared in Year: 2004
Question MCQ▾
Double fertilization is essential for formation of [RPMT]
Choices
Choice (4) | Response | |
---|---|---|
a. | Nucellus | |
b. | Cotyledons | |
c. | Endosperm | |
d. | Seed coat |
Question 240
Appeared in Year: 1999
Question MCQ▾
The head of mature mammalian sperm is made of
Choices
Choice (4) | Response | |
---|---|---|
a. | Two centrioles and an axial filament | |
b. | Nucleus, acrosome, cytoplasm and mitochondrial sheath | |
c. | An acrosome | |
d. | Elongated nucleus covered by acrosome |
Question 241
Question MCQ▾
The exchange of gases in the alveoli of the lungs takes place by
Choices
Choice (4) | Response | |
---|---|---|
a. | Simple diffusion | |
b. | Osmosis | |
c. | Active transport | |
d. | Passive transport |
Question 242
Question MCQ▾
Oxyhemoglobin is an unstable compound because
Choices
Choice (4) | Response | |
---|---|---|
a. | One molecule of hemoglobin combines with four molecules of oxygen. | |
b. | There is a chemical bounding between oxygen and hemoglobin. | |
c. | Hemoglobin is a complex pigmented protein. | |
d. | There is a physical bounding between oxygen and hemoglobin. |