Test: Plants And Animals - 1 - Class 5 MCQ

Characteristics of Mammals:
There are several typical characteristics of mammals that distinguish them from other animals. These characteristics include:
1. They give birth to young ones: Most mammals have a specialized reproductive system that allows them to give birth to live young. This is in contrast to other animals, such as reptiles and birds, which lay eggs.
2. They have hair: Mammals are unique in that they have hair or fur covering their bodies. This hair serves various purposes, including insulation, protection, and sensory perception.
3. They suckle their young ones: Mammals produce milk from mammary glands, which they use to feed their offspring. This behavior is known as lactation and is a distinguishing characteristic of mammals.
4. All of these: The correct answer to the given question is option D, which states that all of the above characteristics are typical of mammals. This means that mammals not only give birth to live young and have hair, but they also suckle their young ones.
In conclusion, the typical characteristics of mammals include giving birth to live young, having hair, and suckling their young ones. These characteristics help to differentiate mammals from other animals and are essential for their survival and reproduction.

Autotrophs are organisms that produce their own food through a process called photosynthesis. They are the primary producers in a food chain, serving as a source of energy for other organisms.
Option A: Apple Tree
- Apple trees are autotrophs because they have chloroplasts in their leaves, which contain chlorophyll, a pigment necessary for photosynthesis.
- They convert sunlight, carbon dioxide, and water into glucose and oxygen.
- The glucose serves as their food source, while the oxygen is released into the atmosphere as a byproduct.
Option B: Frog
- Frogs are heterotrophs, which means they obtain their food by consuming other organisms.
- They are consumers in the food chain and rely on autotrophs or other heterotrophs for their energy needs.
Option C: Mushroom
- Mushrooms are not autotrophs.
- They are fungi, which are heterotrophic organisms that obtain their nutrients by decomposing organic matter.
- Mushrooms play a vital role in recycling nutrients in ecosystems but do not produce their own food.
Option D: Eagle
- Eagles are heterotrophs and are classified as secondary consumers in the food chain.
- They obtain their energy by consuming other animals, such as rodents or fish.
In conclusion:
- The autotroph in the given options is the Apple Tree (Option A). It produces its own food through photosynthesis, making it a primary producer in the food chain.

Animal with Scaly Body and Webbed Feet
Introduction:
The animal described has specific characteristics that help in identifying it. Let's analyze each given option to determine which animal matches the given description.
A: Eagle
- Eagles have feathers, not a scaly body.
- They do not have webbed feet.
- Their sense of smell is not highly developed.
- Eagles do not spend most of their time submerged in water or lay eggs on land.
B: Crocodile
- Crocodiles have a scaly body, which matches the given description.
- They have webbed feet, which also matches the description.
- Crocodiles have a highly developed sense of smell, allowing them to detect prey.
- Crocodiles are semi-aquatic, spending a significant amount of time submerged in water.
- They lay their eggs on land, making them a suitable match for the given description.
C: Cobra
- Cobras have a scaly body, but they do not have webbed feet.
- Their sense of smell is not highly developed.
- Cobras are not aquatic animals and do not spend time submerged in water.
- They lay eggs on land, but their lack of webbed feet makes them an unlikely match.
D: Deer
- Deer do not have a scaly body, as they are covered in fur.
- They do not have webbed feet.
- Their sense of smell is not highly developed compared to other animals.
- Deer are not aquatic animals and do not spend time submerged in water.
- They do not lay eggs on land.
Conclusion:
Based on the analysis, the animal that matches all the given characteristics is Crocodile (Option B).

Answer:
A person who studies and does research on plants is called a botanist. Here is a detailed explanation:
Definition:
- A botanist is a scientist who specializes in the study of plants, including their classification, structure, growth, reproduction, and distribution.
- Botany is the branch of biology that focuses on plant life.
Responsibilities of a Botanist:
- Conducting research on plant taxonomy, morphology, physiology, ecology, and genetics.
- Collecting and analyzing plant specimens in the field.
- Studying plant diseases, pests, and their impact on ecosystems.
- Identifying and classifying plant species.
- Investigating plant adaptations to different environments.
- Examining the effects of human activities on plant populations and ecosystems.
- Conducting experiments to understand plant growth and development.
- Contributing to conservation efforts by studying endangered plant species.
Qualifications and Skills:
- A botanist typically holds a degree in botany, plant biology, or a related field.
- Strong analytical and observational skills are necessary for conducting research and analyzing plant data.
- Knowledge of scientific methodologies and experimental design is essential.
- Familiarity with laboratory techniques, statistical analysis, and fieldwork is important.
- Excellent written and verbal communication skills are required to document and present research findings.
Career Opportunities:
- Botanists can work in various settings, including universities, research institutions, botanical gardens, museums, government agencies, and environmental consulting firms.
- They may specialize in areas such as plant systematics, plant ecology, plant physiology, plant pathology, or ethnobotany.
- Botanists can also contribute to agricultural research, pharmaceutical development, and conservation efforts.
In conclusion, a person who studies and does research on plants is called a botanist. They play a crucial role in understanding and conserving plant life, contributing to our knowledge of the natural world.

Classification of Animals
Animals are classified into different categories based on several characteristics. This process is called classification.
Characteristics used for classification:
- Eating habits: Animals can be classified based on whether they are herbivores, carnivores, or omnivores. This categorization is based on their diet and feeding habits.
- Reproduction: Animals can also be classified based on their reproductive strategies. For example, some animals reproduce sexually, while others reproduce asexually.
- Appearance: The physical characteristics of animals can be used for classification. This includes features such as body shape, size, coloration, and the presence or absence of certain organs or structures.
Importance of classification:
- Helps in organizing and understanding the diversity of animal life.
- Provides a systematic way to study and compare different species.
- Allows scientists to make predictions about the characteristics and behaviors of animals based on their classification.
- Helps in the identification and naming of species.
Examples of animal classifications:
- Mammals, birds, reptiles, amphibians, and fish: This classification is based on the presence or absence of hair/fur, ability to lay eggs, and their ability to regulate body temperature.
- Invertebrates and vertebrates: This classification is based on whether animals have a backbone or not.
- Carnivores, herbivores, and omnivores: This classification is based on the diet and eating habits of animals.
Conclusion:
Classification is a fundamental process in biology that allows us to organize and understand the diversity of animal life. It helps in studying, comparing, and identifying different species based on their characteristics.

Answer:

The organism being described here is trees.

Explanation:

Trees are living beings that undergo the process of photosynthesis. During photosynthesis, trees take in carbon dioxide from the atmosphere and convert it into oxygen. This process occurs during the daytime when sunlight is available. Trees play a crucial role in maintaining the balance of oxygen and carbon dioxide in the environment.

Key Points:

• Trees take in carbon dioxide and release oxygen during daytime.


• Photosynthesis is the process through which trees convert carbon dioxide into oxygen.


• Trees play a vital role in maintaining the balance of oxygen and carbon dioxide in the environment.

Therefore, the correct answer is B: Trees.

Plants with two-year life cycles are called biennials.
Biennial plants have a unique life cycle that spans over two years. Here is a detailed explanation of their life cycle:
1. First year:
- During the first year, biennial plants primarily focus on vegetative growth.
- They develop a rosette of leaves close to the ground.
- The main goal is to store energy in their roots or stems for the upcoming flowering and seed production in the second year.
- Examples of biennial plants include carrots, onion, and parsley.
2. Second year:
- In the second year, biennial plants go through the reproductive phase.
- They produce flowers and set seeds.
- After flowering and seed production, most biennials die.
- However, some may live for an additional year or two, depending on the species.
3. Life cycle completion:
- Biennial plants complete their life cycle within these two years, from germination to seed production.
- The seeds produced by biennials are usually dispersed to ensure the survival and continuation of the species.
Summary:
Biennial plants have a unique life cycle that spans over two years. During the first year, they focus on vegetative growth, while in the second year, they reproduce and set seeds. Some examples of biennial plants include carrots, onion, and parsley.

The name of the seasonal journey undertaken by many animals to distant feeding and breeding grounds is: Migration
Explanation:
- Migration is the process of movement of animals from one region to another, typically in search of better resources such as food, breeding grounds, or favorable climate.
- This seasonal journey is commonly observed in birds, mammals, fish, and even some insects.
- Migration is driven by various factors including the availability of food, changes in weather patterns, and the need for breeding.
- The distances covered during migration can vary greatly depending on the species and their specific requirements.
- Different animals have specific migration patterns such as the annual migration of wildebeest in East Africa or the long-distance migration of Arctic terns.
- Migration routes are often well-established and passed down from generation to generation.
- Animals use various cues for navigation during migration, including landmarks, celestial cues, magnetic fields, and even the position of the sun and stars.
- Migration is a remarkable phenomenon that showcases the incredible abilities and adaptations of different species to survive and thrive in their environments.

Answer:
Octopus
- The creature described in the question is an octopus.
- Octopuses have human-like eyes, which help them see their surroundings and identify potential threats.
- When in danger, octopuses can squirt clouds of ink, which creates a smoke screen and confuses their enemies, allowing them to escape.
- The ink they release is often purple in color, although it can vary.
- Octopuses are also known for their ability to change their pattern and texture to blend in with their surroundings, providing excellent camouflage.
- This camouflage helps them hide from predators and sneak up on their prey.
- Octopuses are highly intelligent and have a wide range of behaviors and adaptations that allow them to survive in various marine environments.
Leaf litter toad, Sea horse, and Hermit crab
- Leaf litter toads, sea horses, and hermit crabs do not possess the characteristics mentioned in the question.
- Leaf litter toads do not have human-like eyes or the ability to squirt ink or change their pattern and texture.
- Sea horses do not possess human-like eyes, ink-squirting abilities, or the ability to change their pattern and texture.
- Hermit crabs do not have human-like eyes or the ability to squirt ink or change their pattern and texture.
Therefore, the correct answer is Octopus (B).