Question:
List important characteristics (at least three) of bryophytes.
Answer:
Characteristics of bryophytes:
- The plant body is differentiated to form stem and leaf-like structures.
- These are considered first true plants.
- These are called amphibians of the plants since they live in soil and water both.
- There is no specialised tissue for the conduction of water and other substances from one part of the plant body to another (no vascular system).
- An embryo is formed upon fertilisation. Water is necessary for fertilisation.
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.
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 4.
Give an example of marsupial mammal
Q 5.
What are naked-seeded plants are called?
Q 6.
Give examples of Arthropod animals.
Q 7.
How do annelid animals differ from arthropods?
Q 8.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 9.
Which worms cause elephantiasis. Name the group it belongs to?
Q 11.
Give examples of Porifera or Sponges.
Q 12.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 13.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 14.
Name the plants that are called "
First vascular land plants".
Q 15.
How is a body of Arthropods segmented?
Q 16.
Who introduced the system of scientific nomenclature of organisms?
Q 17.
Give an example of mammal that can fly.
Q 18.
Who is known as the father of taxonomy?
Q 19.
How do thallophytes and pteridophytes differ from each other? Write two differences.
Q 20.
Write two important characteristics of sponges ?
Q 21.
Give examples of animals belong to Nematoda.
Q 22.
Name a parasitic disease caused by members of Nematoda.
Q 23.
Why are Bats and whales classified as mammals?
Q 24.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 25.
Eichler classified the plant kingdom into two sub-kingdoms. Name the two sub kingdoms.
Q 26.
Amar, Ujala and Anara wrote the scientic name of mango as follows. Who wrote it correctly.
Amar - Mangifera Indica
Ujala - Mangifera indica
Anara - mangifera indica
Q 27.
Algae belongs to which division of Plantae?
Q 28.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 29.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 30.
Identify the Animalia group having following features:
Q 31.
Give three examples of Molluscs
Q 32.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 33.
What changes are evolved in limbs of aves?
Q 34.
Why do we classify organisms?
Q 35.
Why is there a need for classification and systematic naming of living organisms?
Q 36.
On what bases are plants and animals put into different categories?
Q 37.
Who wrote the book
The Origin of Species?
Q 38.
Which region of the earth is called the region of megadiversity?
Q 39.
Based on evolution, primarily how organisms are categorised?
Q 40.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 41.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 42.
According to the five-kingdom system, which kingdom contains organisms whose structure is composed of prokaryotic cells?
Q 43.
Why are Thallophytes called non-embryonic plants?
Q 44.
On what basis plants are divided into two sub-kingdoms?
Q 45.
How Phanerogams are divided further chiefly?
Q 46.
Define Cryptograms.
Q 47.
In how many Phyla, the animal kingdom is divided into?
Q 48.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 49.
Which animal phylum is considered to be first triploblastic animals?
Q 50.
Write important features about Phylum Platyhelminthes.
