Biology · Science General

Diversity in Living Organisms

3,323 Questions

The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

Multiple choice adaptations - european woodland and african grassland adapting to a habit plant adaptations adaptations to different ecosystems biology

A student identified the following characteristics in an animal.
1. Strong claws and broad hip girdles.
2. Spines to prevent from slipping.
3. Ability to climb the tree.
Which of the following title best suits the above animal?

  1. Terrestrial animal

  2. Aquatic animal

  3. Amphibian

  4. Arboreal animal
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Arboreal animals are those which spend most of their time on trees. For example Koala, Lemur, Spider monkey , tree sloth. Such animals show variety of adaptations so that they can easily ascend and descend from the trees. 

1. Tree Sloth have huge claws to hang them from trees. 
2. They have stretchy membranes between their legs or toes for extensive gliding. 
3. They have elongated limbs to cross gaps and reach their food resources and also to provide support. 
4. They have prehensile tail to grasp the branches.
5. They are generally small sized to be able to move easily through cluttered habitat. 
The most common adaptations of terrestrial animals is the legs to walk on land and lungs for respirations. 
Aquatic animals are adapted for swimming for which they have streamlined body and gills for respiration. 
Amphibians are adapted to live both on land as well as water for which they have moist skin as well as lungs for respiration. 
Thus, the correct answer is option D. 

Multiple choice biology the life cycle of animals how do animals reproduce? excretory, nervous and reproductive system structure and functions of living organisms -ii

A living organism is unexceptionalty differentiated from a nonliving structure on the basis of

  1. reproduction

  2. growth and movement

  3. interaction with environment

  4. responsiveness.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Reproduction is often considered the defining characteristic that distinguishes living organisms from non-living structures, as non-living things do not reproduce to create copies of themselves.

Multiple choice biology the life cycle of animals how do animals reproduce? excretory, nervous and reproductive system structure and functions of living organisms -ii

Animals having both the sexes in one body are called __________.

  1. Nematods

  2. Hermaphrodite

  3. Parasite

  4. Pseudocoelomate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Certain animals like earthworm have both the sexes i.e., male and female reproductive system in one body itself. Such organisms are called as hermaphrodite. They tend to reproduce sexual by copulating.

Multiple choice biology the life cycle of animals how do animals reproduce? excretory, nervous and reproductive system structure and functions of living organisms -ii

In crocodiles male sex is predominant at

  1. Low temperature

  2. Intermediate temperature

  3. High temperature

  4. Ratio is genetically determined.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In crocodilians, sex determination is temperature-dependent. Males are typically produced at higher temperatures, while females are produced at lower temperatures.

Multiple choice biology classification of plants thallophyta cryptograms kingdom plantae

Calcium deposition and larvicidal properties are found in

  1. Diatoms

  2. Oscillatoria

  3. Chara

  4. Caulerpa
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chara is a stonewort alga that deposits calcium carbonate on its cell walls, giving it a gritty texture, and it is known for its larvicidal properties.

Multiple choice biology classification of plants thallophyta cryptograms kingdom plantae

Which of the following is not correctly matched?

  1. Chlamydomonas - Unicellular flagellate

  2. Volvox - Colonial, non-flagellate

  3. Laminaria - Flattened leaf like thallus

  4. Chlorella - Unicellular, non-flagellate

  5. Spirogyra - Filamentous structure
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Volvox is a colonial alga, but its individual cells are flagellated. The statement 'non-flagellate' is incorrect because the cells possess flagella for motility.

Multiple choice biology classification of plants thallophyta cryptograms kingdom plantae

The basal cell of Ulothrix is devoid of

  1. Chloroplast

  2. Pyrenoid

  3. Nucleus

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The plant body consists of unbranched, uniseriate filaments. The cells of the filaments are arranged end to end. They are barrel-shaped or cylindrical in shape. The apical cell is somewhat rounded at its terminal end whereas, the basal cell is elongated and does not have chlorophyll. It is also called as the basal holdfast, which attaches the filament to the substratum.