Question
Which term means a group of organisms that can reproduce to produce fertile offspring?
A genus
B kingdom
C population
D species
▶Answer/Explanation
Ans : D
A group of organisms that can reproduce to produce fertile offspring is called “species.” A species is defined as a group of organisms that share similar characteristics and have the ability to interbreed and produce fertile offspring. The ability of fertile offspring to reproduce on their own ensures the survival of the species. It is important to note that the idea of a species can be difficult, particularly when there are variations in the organisms or when there are geographical barriers separating them, creating different populations. Reproduction plays a crucial role in defining and distinguishing different species in biological classification systems.
Question
Woodlice are small organisms that live in damp places.
In an experiment, three live woodlice are put into a glass container. The diagram shows what happens after 30 minutes.
Which characteristic of living organisms is shown by this experiment?
growth
nutrition
respiration
sensitivity
▶Answer/Explanation
Ans : D
Woodlice, also known as pill bugs or roly-polies, are small crustaceans that belong to the group of isopods. They are commonly found in damp environments such as gardens, forests, and under decaying logs or rocks. They are equipped with sensory organs or receptors, known as hygroreceptors, that allow them to detect and respond to changes in their environment. They require a moist environment to thrive, as their bodies are prone to desiccation (drying out).
Over the course of 30 minutes, the woodlice begin to exhibit sensitivity towards the damp surface present in the container. The damp surface within the container provides a more suitable habitat for woodlice compared to the drier areas.
Question
What is a characteristic of all living organisms?
A breathing
B circulation
C egestion
D sensitivity
▶️Answer/Explanation
D
From the given options, the characteristics that are common to all living organisms is Sensitivity.Living organisms have the ability to sense and respond to stimuli from their environment. This includes the ability to detect changes in light, temperature, sound, touch, and other factors. Breathing, circulation, and egestion are not universal characteristics of all living organisms. While many organisms respire, circulate fluids, and eliminate waste, there are exceptions in the living world. Some organisms, such as plants, respire but do not breathe in the same way humans and animals do. Circulation is not present in all organisms, as some simpler life forms rely on diffusion for the transport of nutrients and gases. Egestion, the process of eliminating waste, is also not applicable to all organisms, especially those that do not have a digestive system. Therefore, sensitivity is a characteristic that is shared by all living organisms.
uiQuestion
The scientific names of some animals are listed.
1 Camelus dromedarius
2 Camelus ferus
3 Equus ferus
4 Struthio camelus
Which animals are in the same genus?
A 1, 2 and 3
B 1, 2 and 4
C 1 and 2 only
D 2 and 3 only
▶️Answer/Explanation
C
The animals in the same genus are: Both the Camelus dromedarius (Dromedary camel) and the Camelus ferus ( Wild Bactrian camel) belong to the same genus, Camelus. The genus Camelus includes three extant species: the Dromedary camel, the Wild Bactrian camel, and the Domestic Bactrian camel (Camelus bactrianus). These three species are all large, even-toed ungulates that are adapted to arid environments and have distinctive humps on their backs. While the Dromedary camel is commonly domesticated and found in many parts of the world, the Wild Bactrian camel is critically endangered and primarily inhabits the remote regions of Mongolia and China.
Question
A living organism, X, can make its own food, get rid of toxic materials and detect and respond to
stimuli.
What other four processes must organism X carry out to stay alive?
A excretion, growth, movement, sensitivity
B excretion, growth, nutrition, respiration
C growth, movement, reproduction, respiration
D movement, reproduction, respiration, sensitivity
▶️Answer/Explanation
C
The living organism, X, can make its own food, which means that the organism has the property of nutrition. The organism will eat food for energy and nutrients. The living organism, X, has the ability to get rid of toxic materials, It means that the organism has the property of excretion. The living organism, X, detect and respond to stimuli. It means that organism has the property of sensitivity.
The other four processes organism X must carry out to stay alive can be: growth, movement, reproduction, respiration