Living Organisms

Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?

1. Phylum – Class – Order – Family – Genus
2. Phylum – Class – Family – Order – Genus
3. Family – Order – Class – Species – Genus
4. Class – Family – Order – Species – Genus

Which one of the following statements about classification of plants is correct?

1. Thallophytes have well differentiated body design
2. Funaria is a fungus
3. All Pteridophytes are Phanerogams
4. Vascular system is not found among Bryophytes

Which of the following leaf modifications occur(s) in the desert areas to inhibit water loss?

1. Hard and waxy leaves
2. Tiny leaves 
3. Thorns instead of leaves

Select the correct answer using the code given below:

1. 2 and 3 only
2. 2 only
3. 3 only
4. 1, 2 and 3

Plants contain a variety of sterols like stigmasterol, ergosterol, sitosterol etc., Which very closely resemble cholesterol. These plant sterols are referred as:

1. Phytosterols
2. Calciferols
3. Ergocalciferols
4. Lumisterols

In dry regions, the leaf size of a tree becomes smaller. It is so to

1. maintain natural growth
2. protect plant from animals
3. reduce metabolism
4. reduce transpiration

Which one of the following microbes causes acidification and curdling of milk?

1. Lactic Acid Bacillus
2. Clostridium botulinum
3. Vibrio cholerae
4. Saccharomyces cerevisiae

Which one of the following is the scientific name of the causal organism of elephantiasis?

1. Ascaris lumbricoides
2. Culex pipiens
3. Wuchereria bancrofti
4. Fasciola hepatica

Well defined nucleus is absent in

1. blue green algae
2. diatoms
3. algae
4. yeast

In taxonomic hierarchy family comes between

1. Class and Order
2. Order and Genus
3. Genus and Species
4. Division and Class

Real organs are absent in

1. Mollusca
2. Coelenterata
3. Arthropoda
4. Echinodermata

Corals are

1. Poriferans attached to some solid support
2. Cnidarians, that are solitary living
3. Poriferans present at the sea bed
4. Cnidarians that live in colonies

The locomotory organs of Echinodermata are

1. tube feet
2. muscular feet
3. jointed legs
4. parapodia

Organisms without nucleus and cell organelles belong to

1. fungi
2. protista
3. cyano bacteria
4. archae bacteria

Select the correct option:

1. (i) and (ii)
2. (iii) and (iv)
3. (i) and (iv)
4. (ii) and (iii)

Pteridophyta do not have

1. root
2. stem
3. flowers
4. leaves

Which among the following have scales?

1. Amphibians
2. Pisces
3. Reptiles
4. Mammals

Select the correct option:

1. (i) and (iii)
2. (iii) and (iv)
3. (ii) and (iii)
4. (i) and (ii)

Elephantiasis is caused by

1. Wuchereria
2. Pinworm
3. Planarians
4. Liver flukes

Which one is a true fish?

1. Jellyfish
2. Starfish
3. Dogfish
4. Silverfish

Which among the following has specialised tissue for conduction of water?

1. Thallophyta
2. Bryophyta
3. Pteridophyta
4. Gymnosperms

Select the correct option:

1. (i) and (ii)
2. (ii) and (iii)
3. (iii) and (iv)
4. (i) and (iv)

The two micro-organisms which live in symbiotic association in lichens are

1. fungus and protozoa
2. alga and bacteria
3. bacteria and protozoa
4. alga and fungus

Which of the following reproduces only inside a host cell?

1. Bacteria
2. Virus
3. Amoeba
4. Fungus

Earthworms breathe through their

1. skin
2. gills
3. lungs
4. stomata

Which of the following are characteristics of living beings?

1. Respiration
2. Reproduction
3. Adaptation
4. Excretion

Choose the correct answer from the options below:

1. (i), (ii) and (iv) only
2. (i) and (ii) only
3. (ii) and (iv) only
4. (i), (ii), (iii) and (iv)

Which of the following cannot be called a habitat?

1. A desert with camels.
2. A pond with fishes.
3. A jungle with wild animals.
4. Cultivated land with grazing cattle.

Which of the following organisms does not have both muscles and skeleton for movement?

1. dog
2. snail
3. earthworm
4. human being

Which of the following terms constitute the female part of the flower.

1. sepals, petal and stamen
2. stigma, style and ovary
3. ovary, stamen and stigma
4. ovary, style and stamen

Which of the following is not the primary function of stem?

1. Conduction of water
2. Photosynthesis
3. Formation of branches
4. Bears flowers and fruits

Which of the following is the correct match between the characteristics of stem and the category of plant?

1. weak stem which cannot stand upright: Creeper
2. green tender stem : Shrub
3. thick, hard stem with branching near the base : Tree
4. thick, hard stem with branches high on the plant : Herb