MEDIUM
12th CBSE
IMPORTANT
Earn 100

Trace the development of the zygote up to its implantation in the uterus.

Important Questions on Model Question Papers 4

MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 25
Name and draw a labelled sectional view of the embryonic stage that gets implanted.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 26
ABO blood grouping in the human population exhibits four possible phenotypes from six different genotypes. Explain different mechanisms of inheritance involved in exhibiting the possibility of four phenotypes and six genotypes.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 26
What is a genetic code?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 26
Explain the following: Degenerate code; Unambiguous code; Universal code; Initiator code.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 27
Name the population growth pattern the equation [dN/dt =rN] represents. What does 'r' represent in the equation? Write its importance to population growth.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 27
Explain the principle of carrying capacity by using population Verhulst-Pearl logistic growth curve.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 27
What is the El Nino effect? Explain how it accounts for biodiversity loss.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 21 - Model Question Papers 4>MODEL QUESTION PAPER>Q 27
Explain any three measures that you as an individual would take, to reduce environmental pollution.