THE BIOLOGY PAGE


NCERT (BELOW)

 Class 10 

1).Cell Cycle, Cell Division and Structure of Chromosomes

 2).Genetics 

3).Absorption By Roots

4).Transpiration

5).Photosynthesis

6).Chemical Coordination in Plants

7).Circulatory System

8).Excretory System

9).Nervous System

10).Sense Organs

11).Endocrine System

12).Reproductive System

13).Human Population

14).Human Evolution

15).Pollution

 

NCERT Class 9

5). Fundamental Unit Of Life 

6).Tissue

7).Diversity In Living Organisms  


PHYSICS

CHEMISTRY

MATHS

Comments

Post a Comment

Popular posts from this blog

Cell Cycle, Cell Division and Structure of Chromosomes

Image
  Exercise 1 Solution A.1. (b) DNA and Histones Solution A.2. (c) Coloured bodies Solution B.1. (a) – Nucleotides. (b) – Nucleosome. (c) – Hydrogen Bond. (d) – Phosphate, Sugar and Nitrogenous base. Solution C.1. Chromatin fibre is unfolded, uncondensed, extended DNA. It is only visible when cell under goes division whereas chromosomes are condensed DNA and they are visible when the cell is divided. Solution C.2. Rungs of DNA ladder is made of nitrogenous bases which includes Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). Solution C.3. (a) The four nitrogenous bases in the DNA ladder are Guanine, Thymine, Adenine and Cytosine. (b) Genes are specific sequences of nucleotides on a chromosome. (c) A nucleotide is composed of a phosphate, sugar (pentose) and a nitrogenous base. (d) Nucleosomes are groups of histone molecules surrounded by DNA strands. (e) If there are 46 c
Read more

The Excretory System

  Exercise 1 Solution A.1. (c) Removal of nitrogenous wastes Solution A.2. (a) Proximal convoluted tubule Solution A.3. (c) Sweating Solution A.4. Liver Solution B.1. (a) Liver (b) Cortex (c) Glomerulus (d) Collecting duct (e) Renal artery (Renal vein has urea but renal artery has higher concentration of urea as compared to renal vein). Solution B.2. (a) Afferent arteriole, glomerulus, efferent arteriole, capillary network, renal vein (b) Renal artery, kidney, ureter, urinary bladder, urethra. Solution B.3. (a) Ultrafiltration (b) Excretion (c) Osmoregulation (d) Excretion Solution C.1. (a) Glomerulus  is involved in the process of ultrafiltration.The liquid part of the blood which is plasma including urea, salts, glucose filters out from the glomerulus into the renal tubule. (b) Henle’s loop  is involved in reabsorption of water and sodium ions. (c) Ureter  carries urine to the urinary bladder by ureteral peristalsis. (d) Renal artery  supplied blood to th
Read more