Biology for class 11 and 12

06/03/2026

Finding chomosome number when number of chromosomes in synergids are given

06/03/2026

28/01/2026

06/03/2025

S***m is injected directly into the egg..

25/07/2024

Shout out to my newest followers! Excited to have you onboard! Shout out to my newest followers! Excited to have you onboard! Taju Naserala

05/01/2023

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27/12/2022

Transport in plants
Class 11
Q1. What are porins?
Ans- They are proteins which make large pores in the membrane to allow molecules to pass through.
Q.2 What are tonoplasts?
Ans- Membranes of vacuoles in plants are known as tonoplasts.
Q.3.What is diffusion?
Ans- Random movement of molecules or ions of any substance from a region of higher concentration to the region of lower concentration until an equilibrium is reached .
Q.4 What is turgor pressure?
Ans- Pressure developed in the protoplasm of the cell due to entry of water is called turgor pressure.
Q.5 What is water potential?
Ans- The free energy of water is called osmotic potential .

25/06/2022

Neotype - It is the specimen which is considered as type specimen when holotype and original specimen are not available or are lost. For example a taxonomist describes a plant and based on this description other plants will be named, then this plant will be considered original and specimen collected from this plant will become holotype. In case both original plant and holotype are lost ,new plant of the same species of original plant serves as neotype.