MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which among the following is incorrect about tissue system? |
| A. | Epidermal appendages are outgrowth on epidermis and help in water and mineral absorption and also prevents water loss |
| B. | All tissues that are neither vascular nor epidermal tissues are called ground tissues and include parenchyma, collenchymas and sclerenchyma |
| C. | Open vascular bundles are those that have cambium in between xylem and phloem and are present in most of the monocots |
| D. | In radial vascular bundle, xylem and phloem are arranged on different radii |
| Answer» D. In radial vascular bundle, xylem and phloem are arranged on different radii | |
| 2. |
Which among the following is incorrect about epidermal tissue system? |
| A. | Epidermal tissue system provides protection and stops too much loss of water and comprises of epidermis, stomata and epidermal appendages |
| B. | Single continuous layer of compactly arranged parenchymatous cells that provides complete protection are present in epidermis |
| C. | Cuticle provides water proof nature for leaves and stems and stomata regulates exchange of air and water |
| D. | Stomata are surrounded by a pair of kidney-shaped cells called guard cells and the inner walls of stomata are comparatively thinner than that of outer walls |
| Answer» E. | |
| 3. |
Which among the following is incorrect about different cells in Phloem? |
| A. | Sieve tubes are tubular cells with perforated walls with large vacuoles, peripheral cytoplasm and without nucleus |
| B. | Companion cells are specialized parenchyma cells that help in regulation of metabolic activities |
| C. | Phloem parenchyma cells are elongated cylindrical cells that support sieve tubes |
| D. | Phloem fibers are living cells with extremely thick cell walls and provide mechanical strength |
| Answer» E. | |
| 4. |
Which among the following is incorrect about Stomata? |
| A. | The closing and opening of stomata is due to diffusion |
| B. | The factors affecting stomatal movement are light, CO<sub>2</sub>, O<sub>2</sub>, availability of water, potassium levels and temperature |
| C. | Some plants like grass have dumb-belled shaped guard cells |
| D. | The cells that are just beside the guard cells are called subsidiary cells |
| Answer» B. The factors affecting stomatal movement are light, CO<sub>2</sub>, O<sub>2</sub>, availability of water, potassium levels and temperature | |
| 5. |
Which among the following is incorrect about different cells in Xylem? |
| A. | Tracheids are tubular structures made of dead cells without protoplasm |
| B. | Xylem vessels have lignified walls without protoplasm |
| C. | Xylem parenchymatic tissues are made of thin-walled living cells and conduct water sideways |
| D. | Xylem fibers are perforated and help in conduction of water to branches |
| Answer» E. | |
| 6. |
Which among the following are incorrect about Xylem? |
| A. | Complex permanent tissues are made of many types of cells and comprises of Xylem and Phloem |
| B. | Xylem and Phloem are together termed as vascular bundles |
| C. | Xylem contains mostly of dead cells and helps in conduction of water and minerals from roots to the stem and leaves |
| D. | Tracheids are the living cells that conduct water and minerals vertically |
| Answer» E. | |
| 7. |
Which among the following is incorrect about Sclerenchyma? |
| A. | These are the living tissues responsible for stiffness in plants |
| B. | The husk of a coconut is made of Sclerenchymatous tissue |
| C. | They are of two kinds, namely, sclereids and fibers |
| D. | Simple pits are present in thickened cell walls of sclerenchyma |
| Answer» B. The husk of a coconut is made of Sclerenchymatous tissue | |
| 8. |
Which among the following statements is incorrect about collenchyma? |
| A. | These are the tissue responsible for flexibility in plants and provides support and strength for the plants |
| B. | They have less intercellular spaces in between them |
| C. | They allow bending of stems and leaves without breaking |
| D. | Their cell walls are regularly thickened |
| Answer» E. | |
| 9. |
Which among the following is incorrect about Parenchyma? |
| A. | The packing tissues in plants that stores food, nutrients and water are called Parenchyma |
| B. | Parenchyma with chlorophyll is called chlorenchyma and parenchyma with air is called aerenchyma |
| C. | The intercellular gaps in Parenchyma are negligible |
| D. | Aerenchyma is mostly present in aquatic plants and chlorenchyma is present in leaves |
| Answer» D. Aerenchyma is mostly present in aquatic plants and chlorenchyma is present in leaves | |
| 10. |
Which among the following is not correct about permanent tissues? |
| A. | Permanent cells are formed from the meristem tissues that gradually lose their ability to divide and perform few other specific functions |
| B. | Process by which meristem tissues gradually change to permanent tissues is called Differentiation |
| C. | Permanent tissues are classified into simple and complex permanent tissues |
| D. | Simple permanent tissues and complex permanent tissues are classified based on their intercellular gaps |
| Answer» E. | |
| 11. |
Which among the following is not correct about primary and secondary Meristematic tissues? |
| A. | Primary meristem rises at the early stage of a plant and comprises of apical and intercalary meristem |
| B. | Secondary meristem rises at the later stage of a plant and comprises of later meristem |
| C. | Apical meristem is present at tips of root and shoot and also helps in the increase of length |
| D. | Intercalary meristem helps in the increase of girth in plants |
| Answer» E. | |
| 12. |
Which among the following statements is incorrect about Meristematic tissues? |
| A. | Meristematic tissues are quite small which allows large number of cell division |
| B. | Their cytoplasm is quite dense which means that they contain many cell organelles that help them increase their rate of respiration |
| C. | Their cell wall is thin which allows them to divide easily |
| D. | Larger vacuoles let them break easily and give mechanical support |
| Answer» E. | |
| 13. |
Which among the following is incorrect about tissues in a plant? |
| A. | A cluster of cells that have a common origin and work together to achieve a specific function |
| B. | A plant tissue varies from that of an animal because they vary in their functions and characters |
| C. | In plant there are two types of tissues, namely, Meristematic and permanent tissues |
| D. | Secondary Meristematic tissues comprises of sclerenchyma, collenchymas, parenchyma and epidermis |
| Answer» E. | |
| 14. |
The branch of biology that deals with the internal structure and parts of an organism is called Anatomy . |
| A. | True |
| B. | False |
| Answer» B. False | |