KNEC KCSE BIOLOGY TOPICAL QUESTIONS

Fused head and thorax/cephalothorax often protected by a carapace;
Gaseous exchange through gills;
Two pairs of antennae;
Five to twenty pairs of limbs;
A pair of compound eyes;
Three pairs of mouth parts (consisting of mandibles, maxillary, palp and labium) a pair of
mandibles and 2 pairs of maxillae.

Comments

Give three reasons for classifying organisms.

25/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2011PP1QN03

Give three reasons for classifying organisms.

answers

(i) Identify similarities and differences between organisms;
(ii) Organize scientific knowledge in an orderly system;
(iii) Monitor emergence, presence and disappearance of organisms in and from the earth;
(iv) Grouping organisms for easy stud

Comments

K.C.S.E Biology Q & A - MODEL 2010PP1QN29

24/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2010PP1QN29

The diagram below represents a female cone.

(a) Name the subdivision of the plant from which the cone was obtained.
(b) Other than the presence of cones, name two other external features that identify plants in the subdivision named in (a) above.

answer

(a) Gymnospermae;
(b) Needle-like leaves (with waxy cuticle);
Naked seeds;

Comments

K.C.S.E Biology Q & A - MODEL 2010PP1QN12

24/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2010PP1QN12

The diagram below illustrates the structure of bread mould.

(a) Name the part labelled J.
J
K
(b) State the functions of the structure labelled K.

answers

(a) J – sporangium
K-Rhizoids
(b)- Absorption of soluble substances/ digested food
- Secretion of digestive enzymes;
- Anchorage(of mould on substrate);

Comments

State three external differences between chilopoda and diplopoda.

24/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2010PP1QN08

State three external differences between chilopoda and diplopoda.

answers

Comments

State two characteristics of fungi

23/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2009PP1QN01

State two characteristics of fungi

ANSWERS

Most have cell wall made up of cultic (or cellulose)
Most reproduce by means of spores/ sporulation
They are eukanyotee/eukaryotic
They are heterotrophy/ lack chloroplasts / some are saprophytic while others are Parasitic
Have network of myphae/ mycelia
Store food inform of glycogen or oil droplets

Comments

Name the external feature which is common in birds, fish and reptiles

22/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2009PP1QN01

Name the external feature which is common in birds, fish and reptiles

answer

Scales/ scale

Comments

K.C.S.E Biology Q & A - MODEL 2008PP1QN25

22/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2008PP1QN25

Giving a reason in each case, name the class to w which each of the following organisms
Bean plant
Reason
Bat
Reason

ANSWERS

Bean plant - Dicotyledonae
Reason Leaves have net veined; two cotyledon; tap root system; xylem with phloem in between the arms
Bat Flying mammal
Reason Have sweat glands; 3 ear ossicle; presence of fur; mammaring glands

Comments

What is the formula for calculating linear magnification of a specimen when using a hand lens?

21/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2007PP1QN02

What is the formula for calculating linear magnification of a specimen when using a hand lens?

ANSWER

Comments

Give two reasons why classification is important

21/6/2020

Comments

K.C.S.E Biology Q & A - MODEL 2007PP1QN01

Give two reasons why classification is important

ANSWERS

It makes it easies to identify an organism
It is easier to describe an organism as it is based on characteristics of the organism
Large number of organisms is divided into smaller groups depending on characteristics
The whole world uses the same groupings, so that everyone understands each other.

Comments

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Name the taxonomic unit that comes immediately after a phylum in classification.

Name the taxonomic unit that comes immediately after a phylum in classification.

State two external features found in the class Mammalia only.

State two external features found in the class Mammalia only.

K.C.S.E Biology Q & A - MODEL 2012PP1QN02

K.C.S.E Biology Q & A - MODEL 2012PP1QN02

K.C.S.E Biology Q & A - MODEL 2011PP1QN12

K.C.S.E Biology Q & A - MODEL 2011PP1QN12

K.C.S.E Biology Q & A - MODEL 2011PP1QN09

K.C.S.E Biology Q & A - MODEL 2011PP1QN09

State three characteristics of the class crustacea.

State three characteristics of the class crustacea.

Give three reasons for classifying organisms.

Give three reasons for classifying organisms.

K.C.S.E Biology Q & A - MODEL 2010PP1QN29

K.C.S.E Biology Q & A - MODEL 2010PP1QN29

K.C.S.E Biology Q & A - MODEL 2010PP1QN12

K.C.S.E Biology Q & A - MODEL 2010PP1QN12

State three external differences between chilopoda and diplopoda.

State three external differences between chilopoda and diplopoda.

State two characteristics of fungi

State two characteristics of fungi

Name the external feature which is common in birds, fish and reptiles

Name the external feature which is common in birds, fish and reptiles

K.C.S.E Biology Q & A - MODEL 2008PP1QN25

K.C.S.E Biology Q & A - MODEL 2008PP1QN25

What is the formula for calculating linear magnification of a specimen when using a hand lens?

What is the formula for calculating linear magnification of a specimen when using a hand lens?

Give two reasons why classification is important

Give two reasons why classification is important

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