A. Raphe
B. Valves
C. Frustule
D. Girdles
Related Mcqs:
- Diatom frustule/ shell is made of_____________?
A. Silica
B. Calcium carbonate
C. Manesium carbonate
D. Both B. and C. - Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________?
A. Diffusion.
B. Facilitated diffusion.
C. Passive transport.
D. Active transport. - A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________?
A. Transpiration pull
B. Root pressure
C. Osmotic pressure.
D. None of these - branches of biology and medicine concerned with the structure and function of plant and animal cells is called___________?
A. Nephrology
B. Semiology
C. Orology
D. CytologySubmitted by: Rana Wasim Jamil
- If the number of chromosomes in most body cells of a mammal is 40, the cells in the seminiferous tubule will have___________?
A. 40 chromosomes
B. 20 chromosomes
C. 10 chromosomes
D. While some other will have 20Submitted by: Rashid Mehmood
- There are cells in human body called Faggot cells which cause__________?
A. AIDS
B. Tuberculosis
C. Smallpox
D. LeukaemiaSubmitted by: Ali Mallah
- Who opposed the idea the cell is an empty space bounded by thick wall?
A. Lorenz Oken
B. Schwann
C. Robert Brown
D. Rudolph Virchow - The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called___________?
A. Diffusion
B. Osmosis
C. Phagocytosis
D. Plasmolysis - Exposure to low temperature stimulates plants to flower. This is called___________?
A. Photoperiodism
B. Thermotropism
C. Vernalisation
D. Thermoregulation - Chemical substances used on living tissues that inhibit the growth of micro organism are called___________?
A. Antiseptics
B. Disinfectants
C. Antibiotics
D. Vaccines
