Question

Animals active at day time is called as
(a) Nocturnal
(b) Herbivore
(c) Diurnal
(d) Insectivore

Answer 1

Animalia is a biological kingdom made up of multicellular eukaryotic species. Animals, with a few exceptions, eat organic matter, breathe oxygen, travel, reproduce sexually, and grow from a hollow sphere of cells called the blastula during embryonic development.

Complete answer:
Animals active during twilight are crepuscular, those active during the night are nocturnal, and animals active at sporadic times during both night and day are cathemeral.
Animals active in the daytime are called diurnal. Commonly classified diurnal animals include mammals, birds, and reptiles. Most primates are diurnal. Scientifically classifying diurnally within animals can be a challenge, apart from the increased activity levels during the daytime light. This is a kind of behavior that is characterized by the fully active body of an animal during the daytime. These activities are related to food gathering, mating, and many other things.
Light is one of the most defining environmental factors that determine an animal's activity pattern.
Nocturnal animals stay active during the whole night to hunt, mate, or avoid heat and predators and sleep during the daytime. For example rabbits, skunks, tigers, and hyenas are often erroneously referred to as nocturnal.
Herbivores are those animals that are anatomically and physiologically adapted to eating plant material, as the main components of their diet. For this purpose, they typically have mouthparts adapted to grinding.
Insectivores are carnivorous plants or animals that eat insects. Amphibians were the first vertebrate insectivores. Frogs, lizards, sloth bears, nightingales, swallows, bats, and spiders are a few examples of Insectivorous animals. Venus flytrap, pitcher plant, butterworts, and subdue are some examples of insectivorous plants.

So, the correct option is ‘Diurnal’.

Note:
Diurnal animals have a period of sleeping or other inactivity at night. This timing of activity by an animal depends on a variety of environmental factors such as the temperature, the ability to gather food by sight, the risk of predation, and the time of year. Diurnal is a cycle of activity within 24 hours; cyclic activities called circadian rhythms are endogenous cycles not dependent on external cues or environmental factors except for a zeitgeber.