Get premium membership and access questions with answers, video lessons as well as revision papers.
a) Organic evolution is the
progressive development of
complex organisms from
simple pre-existing life
forms over a long period of
time; (1mk)
b) i. Analogous structures –
structures that have
different embryonic origin
but modified to perform the
same function in different
animals; (1mk)
ii. Comparative embryology -
comparing embryos of
vertebrates; (to establish
their phylogenic evolutionary
relationship) 1mk
alexis sadro answered the question on October 8, 2017 at 17:57
- What causes the following diseases? (i) Diabetes mellitus. (ii) Diabetes inspidus(Solved)
What causes the following diseases? (i) Diabetes mellitus. (ii) Diabetes insipidus
Date posted: October 8, 2017. Answers (1)
- Name animal organs that are rich in (a) Lysosomes (b) Golgi body(Solved)
Name animal organs that are rich in (a) Lysosomes (b) Golgi body
Date posted: October 8, 2017. Answers (1)
- (a) Name two components of blood that is not present in the glomerular filtrate (b) Explain why they are not present in glomerular filtrate.(Solved)
(a) Name two components of blood that is not present in the glomerular filtrate (b) Explain why they are not present in glomerular filtrate
Date posted: October 8, 2017. Answers (1)
- (a) Differentiate between hypogeal and epigeal germination. (b) State two causes of dormancy in seed(Solved)
(a) Differentiate between hypogeal and epigeal germination. (b) State two causes of dormancy in seed
Date posted: October 8, 2017. Answers (1)
- (a) Define polyploidy. (b) Name two disorders resulting from mutations.(Solved)
(a) Define polyploidy. (b) Name two disorders resulting from mutations.
Date posted: October 8, 2017. Answers (1)
- State the functions of the following parts of alight microscope (a) Condenser (b) Diaphragm(Solved)
State the functions of the following parts of alight microscope (a) Condenser (b) Diaphragm
Date posted: October 8, 2017. Answers (1)
- (a) Define immunity (b) Distinguish between natural immunity and acquired immunity (c) Identify one immunizable disease(Solved)
(a) Define immunity (b) Distinguish between natural immunity and acquired immunity (c) Identify one immunizable disease
Date posted: October 8, 2017. Answers (1)
- Enzymes are important in various physiological processes in living thing. Differentiate between an enzyme and hormone (Solved)
Enzymes are important in various physiological processes in living thing. Differentiate between an enzyme and hormone
Date posted: October 8, 2017. Answers (1)
- Give the role of the following parts of male reproductive system (a)Epididymis (b) Prostate gland(Solved)
Give the role of the following parts of male reproductive system (a)Epididymis (b) Prostate gland
Date posted: October 8, 2017. Answers (1)
- What characteristics do gills of a fish and mouth cavity of a frog have in common which enable them to be efficient in gaseous exchange?(Solved)
What characteristics do gills of a fish and mouth cavity of a frog have in common which enable them to be efficient in gaseous exchange?
Date posted: October 8, 2017. Answers (1)
- Name an end product of photosynthesis that may be found in the inter-cellular spaces of a leaf.(Solved)
Name an end product of photosynthesis that may be found in the inter-cellular spaces of a leaf.
Date posted: October 8, 2017. Answers (1)
- The shirt of a student was stained by solution of DCPIP. A friend advised him to wash with lemon juice. Explain.(Solved)
The shirt of a student was stained by solution of DCPIP. A friend advised him to wash with lemon juice. Explain.
Date posted: October 8, 2017. Answers (1)
- a) Define the term ‘Parthenocarpy’ (b) Name one plant growth hormone that promotes Parthenocarpy(Solved)
a) Define the term ‘Parthenocarpy’ (b) Name one plant growth hormone that promotes Parthenocarpy
Date posted: October 8, 2017. Answers (1)
- a) Name two excretory products produced by both plants and animals. (b) What is the name given to the product which excess amino acids are(Solved)
a) Name two excretory products produced by both plants and animals. (b) What is the name given to the product which excess amino acids are
Date posted: October 8, 2017. Answers (1)
- a) State the category of variation into the following traits fall. (i) Skin pigmentation (ii) Blood group (b) Give two possible genotypes of blood group A(Solved)
a) State the category of variation into the following traits fall. (i) Skin pigmentation (ii) Blood group (b) Give two possible genotypes of blood group A
Date posted: October 8, 2017. Answers (1)
- State the name given to the study of (a) Chemical changes in living organisms (b) Insects(Solved)
State the name given to the study of (a) Chemical changes in living organisms (b) Insects
Date posted: October 8, 2017. Answers (1)
- What is taxonomy?(Solved)
What is taxonomy?
Date posted: October 8, 2017. Answers (1)
- Why is HIV/AIDS not be classified as an organism?(Solved)
Give reason why HIV/AIDS can not fit to be termed as organism.
Date posted: October 7, 2017. Answers (1)
- Alcohol is one of the drugs that is abused in our society.Give two effects in the body after taking alcohol(Solved)
Alcohol is one of the drugs that is abused in our society.Give two effects in the body after taking alcohol
Date posted: October 6, 2017. Answers (1)
- (a)What is the importance of the of following in a ecosystem?
(i)Decomposers
(ii)predation
(b)Give a reason why two species in an ecosystem cannot occupy the same niche
(c)Give the...(Solved)
(a)What is the importance of the of following in a ecosystem?
(i)Decomposers
(ii)predation
(b)Give a reason why two species in an ecosystem cannot occupy the same niche
(c)Give the bacteria found in root nodules of leguminous plant
Date posted: October 6, 2017. Answers (1)