Question:
What is a notochord? What does it do?
Answer:
The notochord is a long rod-like support structure (chord=string) which runs along the back of the animal separating the nervous tissue from the gut. It provides a place for muscles to attach for ease of movement.
Diversity in Living Organisms
Q 1.
Snakes, turtles, lizards and crocodiles belong to which category of vertebrates?
Q 2.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 3.
Identify the plant groups which has net like veins in leaves, flower parts in group of fours or fives, vascular bundles are in a ring and two seed leaves.
Q 4.
What are naked-seeded plants are called?
Q 5.
Why do we classify organisms?
Q 6.
On what basis plants are divided into two sub-kingdoms?
Q 8.
What are the general characteristics found in all animals?
Q 10.
Algae belongs to which division of Plantae?
Q 11.
Identify plant group which has parallel venation, scattered vascular bundles, flower petals/parts in multiple of three, fibrous roots.
Q 12.
Ambibian heart is divided into how many chambers?
Q 13.
How Phanerogams are divided further chiefly?
Q 14.
Give examples of Arthropod animals.
Q 15.
Which in your opinion is more basic characteristic for classifying organism. The place where they live in or the kind of cells they are made of?
Q 16.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Q 17.
In the hierarchy of classification, which grouping will have the smallest number of organisms with a maximum of characteristics in common and which will have the largest number of organisms?
Q 18.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 19.
In which kingdom you will place an organism which is multicellular, eukaryotic, non-green heterotroph or saprophytic, lacks chlorophyll and has an absorptive mode of nutrition?
Q 20.
How do annelid animals differ from arthropods?
Q 21.
Why are Bats and whales classified as mammals?
Q 22.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 23.
Give examples of the organisms that have cilia and flagellum for moving around.
Q 24.
Give two examples of Bryophyta plants?
Q 25.
Give two examples of Pteridophyes
Q 26.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 27.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 28.
Which is the largest group of animals?
Q 29.
Who wrote the book
The Origin of Species?
Q 30.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 31.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 32.
Give examples of Thallophyta plants.
Q 33.
How do poriferan animals differ from coelenterate animals?
Q 34.
Sunflower, Maize, Wheat and Pea belong to which group of plants?
Q 35.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 36.
No scales on skin, mucus glands on skin, three chambered heart, respiration through gills, lungs and skin, oviparous, live on land and in water. Name the group of these vertebrates.
Q 37.
Give three examples of flightless birds.
Q 38.
Give examples of egg laying mammals
Q 39.
Give an example of mammal that can fly.
Q 40.
What do you mean by biodiversity?
Q 42.
Which region of the earth is called the region of megadiversity?
Q 43.
Will advanced organisms be the same as complex organisms? Why?
Q 44.
Blue-green algae are classified with bacteria and placed in kingdom Monera.
Q 45.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 46.
Why are Thallophytes called non-embryonic plants?
Q 47.
Which division among plants has the simplest organisms?
Q 49.
Why bryophytes are called the amphibians of the plant kingdom?
Q 50.
What are the uses of bryophytes?
