KNEC KCSE BIOLOGY TOPICAL QUESTIONS

ATIKA SCHOOL

Sponsored:

K.C.S.E Biology Q & A - MODEL 2003PP1QN07

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN07

The diagram below represents regions of a root tip.

a) Name the tow regions above X in ascending order
b) State the function of the part labeled X

answers

a) Zone of cell division Acc cell multiplication
Zone of cell elongation / enlargement; Acc expansion for elongation
b) To protect root tip

Comments

Distinguish between analogous and homologous structures.

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN06.

Distinguish between analogous and homologous structures.

answers

Analogous structures – structures which (appear similar and ) perform similar functions but have different origins.
Homologous structures – structures which have a common origin but (have evolved to ) perform different functions.

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN05

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN05

A bone obtained from a mammal is represented by the diagram below.

a) Name the bone.
b) Which bones articulate with the bone shown in the diagram at the notch?

answers

a) Ulna
b) radius;
Humerus;

Comments

What is the role of the bacteria named in (a) above?

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN04

What is the role of the bacteria named in (a) above?

answers

Convert nitrogen into nitrates / convert nitrogen into proteins / convert N2 into nitrogenous Compounds / foxed N2 into nitrates.

Comments

Name the bacteria found in root nodules of leguminous plants.

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN04

Name the bacteria found in root nodules of leguminous plants.

answers

Rhizobium

Comments

How do the male gamete nuclei reach the ovule after pollen grains land on the stigma?

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN03

How do the male gamete nuclei reach the ovule after pollen grains land on the stigma?

answers

By pollen tube that grows through style

Comments

Name the phylum whose members possess notochord

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN02

Name the phylum whose members possess notochord

answer

Chordata

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN01

17/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2003PP1QN01

A process that occurs in plants is represented by the equation below.
C6H12O6 2C2H5OH + 2CO2 + Energy
(Glucose) (Ethanol) (Carbon dioxide)
a) Name the process.
b) State the economic importance of the process named in (a) above

answers

a) Anaerobic respiration / fermentation; Acc. Alcohol production/ drawing dough.
b) Brewing/ Banking.

Comments