Fill in the blank space and complete the following table: Names of animals Features Group to which they belong Insect, Spider, Crab, Prawn Arthropoda Mollusca Earthworm, Leech Annelida Roundworm They live in the intestine of humans or other animals. Aschelminthes Flatworm They live in the intestine of humans or animals, i.e. are parasites. Although some live independently. Platyhelminthes Star-fish, Sea-urchin Their bodies are covered with spines; Their mouth is at the lower end of the body. Echinodermata

Names of animals Features Group to which they belong Insect, Spider, Crab, Prawn These have claws and appendages which are divided into sections, hard covering present on their bodies. Arthropoda Snail, Oysters, Octopus They have muscular legs for movement , shell made of calcareous material to cover their bodies either from inside or outside. Mollusca Earthworm, Leech Their body is segmented. They respire through their body surface. Annelida Roundworm They live in the intestine of humans or other animals. Aschelminthes Flatworm They live in the intestine of humans or animals, i.e. are parasites. Although some live independently. Platyhelminthes Star-fish, sea-urchin Their bodies are covered with spines; Their mouth is at the lower end of the body. Echinodermata

Fill in the blank space and complete the following table: Features of vertebrate animals Types of vertebrates 1. Live in water, has a scale on the body, uses fin to swim, breathe through gills. 1. Fish 2. Lives in water during larval conditions, swims by moving its tail when an adult jumps around in the nearby land. 3. Lays egg on the land, grow up on the land, and moves by sliding on its chest. 4. Feathers cover its body, can fly on wings, lays eggs, young ones hatch out of eggs. 5. Doesn't lay eggs, give birth to young ones. 6. Feeds its milk to the young ones.

Features of vertebrate animals Types of vertebrates 1. Live in water, has a scale on the body, uses fin to swim, breathe through gills. 1. Fish 2. Lives in water during larval conditions, swims by moving its tail when an adult jumps around in the nearby land. 2. Amphibia 3. Lays egg on the land, grow up on the land, and moves by sliding on its chest. 3. Reptile 4. Feathers cover its body, can fly on wings, lays eggs, young ones hatch out of eggs. 4. Bird 5. Doesn't lay eggs, give birth to young ones. 5. Oviparous 6. Feeds its milk to the young ones. 6. Mammals A vertebrate is an animal with a spinal cord surrounded by cartilage or bone. Humans, birds, mammals, reptiles, amphibians, and fish are all vertebrates. There are seven living classes of vertebrates: Aves, Reptilia, Agnatha, Amphibia, Mammalia, Osteichthyes, Chondrichthyes.

Collect the seeds as mentioned below and find out if they are Monocotyledonous or Dicotyledonous. Name of seed Number of cotyledons Monocotyledonous or Dicotyledonous Bengal gram 2 Dicotyledonous Wheat Mung beans Red lentil Paddy Cardamom Betel nut Peanut Date Pumpkin Corn

Name of seed Number of cotyledons Monocotyledonous or Dicotyledonous Bengal gram 2 Dicotyledonous Wheat 1 Monocotyledonous Mung beans 2 Dicotyledonous Red lentil 2 Dicotyledonous Paddy 1 Monocotyledonous Cardamom 1 Monocotyledonous Betel nut 1 Monocotyledonous Peanut 2 Dicotyledonous Date 1 Monocotyledonous Pumpkin 2 Dicotyledonous Corn 1 Monocotyledonous The seeds are the unit of reproduction in flowering plants. Depends on the number of cotyledons there are two types of plants: Monocotyledonous and Dicotyledonous. The plants that have two cotyledons in their seed are known as dicot and that of one cotyledon are known as monocot plants.

Make a list of invertebrates and vertebrates found near your house

MEDIUM

6th West Bengal Board

IMPORTANT

Environment and Science Class 6>Chapter 9 - Biodiversity and its Classification>Exercise 1

Fill in the blank space and complete the following table:

Names of animals	Features	Group to which they belong
Insect, Spider, Crab, Prawn		Arthropoda
		Mollusca
Earthworm, Leech		Annelida
Roundworm	They live in the intestine of humans or other animals.	Aschelminthes
Flatworm	They live in the intestine of humans or animals, i.e. are parasites. Although some live independently.	Platyhelminthes
Star-fish, Sea-urchin	Their bodies are covered with spines; Their mouth is at the lower end of the body.	Echinodermata

EASY

6th West Bengal Board

IMPORTANT

Environment and Science Class 6>Chapter 9 - Biodiversity and its Classification>Exercise 2

Fill in the blank space and complete the following table:

Features of vertebrate animals	Types of vertebrates
1. Live in water, has a scale on the body, uses fin to swim, breathe through gills.	1. Fish
2. Lives in water during larval conditions, swims by moving its tail when an adult jumps around in the nearby land.
3. Lays egg on the land, grow up on the land, and moves by sliding on its chest.
4. Feathers cover its body, can fly on wings, lays eggs, young ones hatch out of eggs.
5. Doesn't lay eggs, give birth to young ones.
6. Feeds its milk to the young ones.

HARD

6th West Bengal Board

IMPORTANT

Environment and Science Class 6>Chapter 9 - Biodiversity and its Classification>Exercise 3

Now arrange the following animals in the box below in different groups:

Rohu fish, Earthworm, Bat, Fox, Tailor bird (Tuntuni), Elephant, Cat, Tiger, Porcupine, Koi Fish, Owl, Vulture, Tortoise, Kangaroo, Hippopotamus, Whale, Monocled Cobra, Dolphin, Cockroach, Butterfly, Rhinoceros, Monitor lizard, Crocodile, Catfish (Magur), Shark, Humans, Frog, Salamander, Leech, Snail, Oyster, Mosquito.

EASY

6th West Bengal Board

IMPORTANT

Environment and Science Class 6>Chapter 9 - Biodiversity and its Classification>Exercise 5

Collect the seeds as mentioned below and find out if they are Monocotyledonous or Dicotyledonous.

Name of seed	Number of cotyledons	Monocotyledonous or Dicotyledonous
Bengal gram	2	Dicotyledonous
Wheat
Mung beans
Red lentil
Paddy
Cardamom
Betel nut
Peanut
Date
Pumpkin
Corn