Question : The kidney-shaped guard cells are present in which of the following?
Option 1: Dicot plants
Option 2: Monocot plants
Option 3: Both of the above
Option 4: Algae
Correct Answer: Dicot plants
Solution : The correct option is dicot plants.
The presence of kidney-shaped guard cells is a distinguishing trait of dicotyledonous plants. Guard cells are specialised cells in the Epidermis (outermost layer) of leaves and stems, specifically in stomata (holes on the leaf surface). Guard cells of monocotyledonous or monocot plants are generally elongated or dumbbell-like. Guard cells in monocots are often placed parallel to one another within the stomata. When they swell and become turgid, the stomatal hole opens, allowing gases to exchange. When they become flaccid and lose their turgidity, the stomatal pore shuts, minimising water loss through transpiration and preventing excessive water loss in dry or stressful environments.
Application | Eligibility | Selection Process | Result | Cutoff | Admit Card | Preparation Tips
Question : Dumb-bell shaped guard cells are present in
Option 1: Groundnut
Option 2: Gram
Option 3: Wheat
Option 4: Mango
Question : Concerning the classification of algae, the members of Phaeophyceae are commonly called:
Option 1: Green algae
Option 2: White algae
Option 3: Brown algae
Option 4: Red algae
Question : Stomatal opening is based on which of the following?
Option 1: Exosmosis
Option 2: Endosmosis
Option 3: Plasmolysis in guard cells
Option 4: Decrease in concentration of cell sap
Question : Which of the following cell structures is present only in plant cells?
Option 1: Mitochondria
Option 2: Cell wall
Option 3: Cell membrane
Option 4: Vacuole
Question : Directions: In the following question, arrange the following words as per their order in the dictionary. 1. Directorial 2. Directory 3. Directive 4. Directional
Option 1: 1, 3, 4, 2
Option 2: 3, 4, 2, 1
Option 3: 3, 4, 1, 2
Option 4: 4, 3, 1, 2
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile