Biology Quiz on Growth and Reproduction

In majority of higher animals and plants,_____ and _____ are mutually exclusive events.

• growth; nutrition

• nutrition; consciousness

• growth; reproduction

• reproduction; consciousness

Answer explanation

In higher animals and plants, growth and reproduction are mutually exclusive because resources are often allocated to one process at a time. When an organism is focused on growth, it typically does not engage in reproduction, and vice versa.

In multicellular organisms _____refers to the production of progeny possessing features more or less similar to those of parents.

• growth

• reproduction

• metabolism

• consciousness

Answer explanation

In multicellular organisms, reproduction is the process that leads to the production of offspring with traits similar to their parents, distinguishing it from growth, metabolism, and consciousness.

Families are characterized on which of the following features of plant species?

• External morphology

• Anatomy of parts

• Vegetative and reproductive parts

• Seasonal similarities and variations

Answer explanation

Families of plant species are primarily characterized by their external morphology, which includes features like leaf shape, flower structure, and overall plant form. This helps in classifying and identifying different plant families.

The sum total of all the chemical reactions occurring in our body is known as

• metabolism

• growth

• regeneration

• reproduction

Answer explanation

The sum total of all chemical reactions in the body is called metabolism. It encompasses all processes that convert food into energy and build or break down molecules, making it essential for life.

Cell division occurs _______in plants and _______in animals.

• continuously, only up to a certain age

• only up to a certain age, continuously

• continuously, never

• once, twice

Answer explanation

Cell division occurs continuously in plants, allowing for growth and repair. In contrast, animals typically experience cell division only up to a certain age, after which growth slows down significantly.

The fungi, the filamentous algae, the protonema of mosses, all easily multiply by _____.

• budding

• fission

• regeneration

• fragmentation

Answer explanation

The fungi, filamentous algae, and protonema of mosses can easily multiply by fragmentation, where parts of the organism break off and grow into new individuals, making it the correct choice.

Which of the following factors exclusively affects reproduction in seasonal breeders, both plants and animals?

• Water

• Temperature

• Photoperiod

• All of these

Answer explanation

Photoperiod is the primary factor influencing reproduction in seasonal breeders, as it affects the timing of reproductive cycles in both plants and animals. Water and temperature can influence growth but not exclusively reproduction.

The keys are based on contrasting characters generally in a pair called _______.

• flora

• couplet

• both (a) and (b)

• manuals

Answer explanation

The correct answer is 'couplet' because it refers to a pair of contrasting characters, commonly used in literature and poetry. 'Flora' relates to plant life, and 'manuals' do not fit the context.

The order generally ends with

• ales

• aceae

• eae

• none of these

Answer explanation

The correct answer is 'aceae' because in biological classification, the order of plants typically ends with this suffix, indicating a taxonomic rank. The other options do not represent the standard ending for an order.

Which of the following are unique features of living organisms?

• Growth and reproduction

• Reproduction and ability to sense environment

• Metabolism and interaction

• All of the above

Answer explanation

All the options listed—growth, reproduction, metabolism, and interaction—are unique features of living organisms, making 'All of the above' the correct choice.