Answer and list any five organism found in our surroundings
for each organism draw their picture and record
A) two specific features of its phylum .
B) one and adaptive feature with reference to its habitat. Mention how helpful it is.
Answers
Explanation:
AIM
To observe and draw the given specimens – earthworm, cockroach, bony fish and bird. For each specimen record.
One specific feature of its phylum.
One adaptive feature with reference to its habitat.
MATERIALS REQUIRED
Preserved specimens of earthworm, cockroach, bony fish and bird, pencil, practical notebook.
THEORY
Different organisms live in different habitats. Each animal has certain features which enable it to live in its habitat. The special features which enable plants and animals to be successful in a particular environment are called adaptations. Adaptations are due to certain modifications that are observed in organism at morphological, anatomical and physiological levels. By observing simple morphological features different adaptations found in organisms can be studied.
PROCEDURE
Observe carefully the preserved specimen.
Note the characteristics of organisms.
Draw well labelled diagrams in practical notebook.
OBSERVATIONS
1. EARTHWORM (Pheretima)
It belongs to phylum Annelida.
FEATURES OF PHYLUM
The body of the animal is divided into segments (internally and externally) called metameres.
Chitinous setae which act as locomotory organ are present.
Adaptive Features
Earthworm lives inside a burrow in the soil. It has
following adaptations:
Its body is cylindrical and elongated.
The anterior end is pointed and bears mouth. Over the mouth is a small sensory lobe called prostomium. It helps in sensing the soil while digging.
It feeds on soil or humus and excretes fine soil and undigested material as ring-shaped castings through anus. This helps in making burrows.
Skin is always kept moist with the help of mucus glands.
cbse-class-9-science-practical-skills-animal-kingdom-1
please mark my answer as brainlisted.