Zoology Class 11 - Ch1 flashcards [ Living world ]

What are the characteristics of living things..? (7)

• Growth

• Reproduction

• Metabolism

• Cellular organisation

• Consciousness

• Ability to self organise and self replicate

• Interactions and emergence

What are the twin characteristics of growth..?

• increase in mass

• Increase in number of individuals

What characteristic of plant growth differentiates it from most animals?

In plants, growth by cell division occurs continuously throughout their lifespan.

What characteristic of animal growth differentiates it from most plants ?

In animals, this growth is seen only up to a certain age. However cell division occurs in certain tissues to replace the lost cells.

What is the relationship between growth and reproduction in unicellular organisms compared to higher animals and plants?

• In majority of higher animals and plants growth and reproduction are mutually exclusive events.

• In unicellular organisms, growth is synonymous with reproduction.

What is the difference between the growth in living and non-living things ?

Living things grow from the inside but non-living things grow from the outside

What are the types of asexual reproduction?

• Budding

• Fragmentation

• Asexual spore formation

Explain budding

Budding is a type of asexual reproduction where the mother cell grows a bud and the bud detaches itself from the mother cell to form a new cell