WorksheetsOrganismal Biology
Total questions: 70
Worksheet time: 35mins
Which part of the animal cell controls all the activities of the cell?
Cell membrane
Cytoplasm
Nucleus
Mitochondria
Which sense helps animals know what is happening around them?
Smell
Hearing
Touch
All of the above
Which part of an animal's body acts like a control center to tell the muscles when to move?
Stomach
Fur
Brain
Skin
What is the best way to handle waste from plants, such as fallen leaves or old fruit peels?
Compost them to make soil better.
Burn the waste to get rid of it.
Throw plant waste into regular trash.
Bury the waste deep in the ground without processing.
Why do many plants bend or grow towards a sunny window?
They are thirsty and need water.
They are reaching for the clouds.
They need sunlight to make their food.
They are trying to escape the shade.
Which of the following plants can grow in hot weather, especially in deserts?
Cacti
Cabbage
Winter Jasmine
Cherry Blossom
Agave
What is the first line of defense for plants against pathogens?
Cuticle
Stomata
Xylem
Root hairs
What is it called when a sperm cell joins with an egg cell to form a zygote (a single cell)?
Crossing over
Intercourse
Fertilization
Fermentation
When a plant gets too hot and begins to lose too much water, it closes tiny holes on its leaves called stomata. This is an example of homeostasis because the plant is trying to:
Change its color to hide from animals.
Keep its internal conditions balanced and stable.
Grow as tall as a skyscraper.
Stop making its own food.
Do all animals have a circulatory system?
Yes
No
Maybe
Some do, some don't
Do plants respond to light?
Yes
No
Sometimes
Only at night
Do plants have a nervous system like humans and animals?
Yes
No
Only trees
Only flowers
What helps an animal sense danger?
Fur
Nervous system
Tail
Wings
Which tissue helps animals move their body parts?
Skin tissue
Muscle tissue
Bone tissue
Blood tissue
Which chemical in animals helps control body growth and development?
Oxygen
Hormones
Water
Vitamins
What do the chemicals inside plants help control?
The color of the soil
The growth of the plant
The number of insects around the plant
The weather conditions
Which animal lays eggs?
Dog
Cat
Chicken
Cow
Fish
What is the basic unit of a plant that helps it live and grow?
Tissue
Cell
Leaf
Root
Why do plants need sunlight?
To keep warm
To make their own food
To drink water
To breathe air
What is an adaptation?
Something an animal learns in one day.
A trait that helps an animal survive.
A place where animals live.
A type of food that animals eat.
In photosynthesis, what do plants produce as a byproduct?
glucose
carbon dioxide
oxygen
water
A dog gets a small cut on its paw. Which part of the dog's immune system helps protect it from germs entering the cut?
Fur
Skin
Bones
Tail
Which body part helps a turtle protect itself from enemies?
Wings
Shell
Soft skin
Fur
Which plant tissue is responsible for transporting water and dissolved minerals?
Xylem
Phloem
Epidermis
Cortex
Which body part helps fish get oxygen from water?
Lungs
Gills
Skin
Fins
Which part of the plant acts like a drinking straw to carry water and minerals up from the roots to the leaves?
Xylem
Phloem
Stem
Root hairs
Which best describes the support structure of an animal?
Skeletal system
Muscular system
Combination of skeletal, muscular, and connective tissue
Only nervous system
What waste comes out of an animal's body that is liquid?
Air
Urine
Food
Blood
What helps animals stay alive?
Playing
Eating candy
Keeping their body normal
Sleeping outside
Which plant part protects the plant from insects and animals?
Roots
Leaves
Thorns
Flowers
What part of the plant helps it stay upright and supports its leaves and flowers?
Roots
Leaves
Flowers
Stem
Which part of the plant helps control water loss by opening and closing tiny holes on the leaf?
Roots
Stem
Stomata
Flowers
What do herbivores, carnivores, and omnivores eat?
Herbivores eat meat; carnivores eat plants; omnivores eat both.
Herbivores eat plants; carnivores eat meat; omnivores eat both.
Herbivores eat both; carnivores eat plants; omnivores eat meat.
Herbivores eat insects; carnivores eat fish; omnivores eat fruits.
Which organelle is responsible for producing energy for the animal cell?
Ribosome
Nucleus
Lysosome
Mitochondria
How do animals use their senses to control their behavior?
By ignoring changes in their surroundings
By receiving signals from their senses and responding to them
By moving randomly without purpose
By relying only on instincts and not senses
When an animal performs a reflex action, which of the following best describes the pathway of the signal?
Sensory neuron to spinal cord to motor neuron
Brain to lungs to muscles
Motor neuron to sensory neuron to brain
Stomach to nerves to brain
Why is composting plant waste, like vegetable scraps and leaves, considered an effective method for waste control in many communities?
It locks organic waste in landfills to prevent decomposition
It breaks down organic waste naturally, creating nutrient-rich soil while reducing methane emissions from landfills
It burns organic waste to produce quick energy
It moves organic waste to water bodies to dilute pollution
Which plant hormone is primarily responsible for motor control during phototropism by moving to the shaded side of a stem and causing cells there to grow longer?
Ethylene
Auxin
Insulin
Chlorophyll
Cacti ______ to reduce water loss and ______ to perform photosynthesis.
Large leaves, roots
Spines, stems
Thick roots, leaves
Shallow roots, leaves
Plants don't have blood cells. How do they primarily detect a pathogen (like bacteria) that has landed on their surface?
By phagocytosis using blood cells
Using specialized receptors on the outside of their cells
Only after the pathogen enters the roots
Through photosynthetic pigments in leaves
Which of the following best describes puberty in animals? Choose the best answer.
The time in which they grow taller and bigger
The age at which they start to think clearly
It is the last moments of their life
The time in which gonads (ovaries, testes) produce gametes (ova or sperm) in quantities that enable the animal to reproduce
Plants maintain a stable internal balance by controlling the amount of water that evaporates from their leaves. What are the specialized structures on the leaf surface that open and close to regulate gas exchange and water loss?
Phloem vessels
Stomata
Chloroplasts
Cuticle
What are the two main types of circulatory systems in the animal kingdom?
Open and closed
Xylem and phloem
Endocrine and nervous
None of the above
Which shows sensory control in plants?
A plant growing towards sunlight
A plant staying still all the time
A plant making seeds
A plant changing its name
A plant responding to touch
Why are plant responses usually slower than animal responses?
Plants are weaker than animals
Plants do not need to respond
Plants use hormones instead of nerves
Plants have a slower growth rate
Which of the following best describes nervous control?
It is the process by which animals use the nervous system to detect stimuli, transmit impulses, and coordinate responses.
It refers to the way animals regulate their metabolism and store energy for survival.
It allows animals to detect stimuli, but the muscles respond without any involvement of the nervous system.
It regulates only the digestive system of animals.
Which animal tissue is mainly responsible for sending messages from the brain to different parts of the body?
Epithelial tissue
Muscle tissue
Connective tissue
Nervous tissue
Which gland releases hormones that help regulate growth, metabolism, and reproduction in animals?
Sweat gland
Digestive gland
Endocrine gland
Thyroid gland
Which plant hormone helps in controlling fruit ripening in plants?
Auxin
Cytokinin
Ethylene
Gibberellin
What is the process called when a male sperm joins with a female egg?
Hatching
Fertilization
Metamorphosis
Pollination
Which part of the plant cell helps make food using sunlight?
Nucleus
Chloroplast
Cell wall
Vacuole
Which of the following is needed by plants to carry out photosynthesis?
Oxygen, soil, and sunlight
Carbon dioxide, water, and sunlight
CO2, water, nitrogen
CO2, sunlight, nitrogen
Which of the following best explains how adaptations develop in animal populations?
Animals choose traits they want to have.
Traits appear suddenly during an animal's lifetime.
Useful traits are passed on through reproduction over generations.
All animals develop the same adaptations.
What cells control the opening and closing of the stomata?
Stoma
Guard cells
Parenchyma cells
Mesophyll cells
Which part of an animal's immune system helps fight infections by destroying germs that enter the body?
Skin
Antibodies
White blood cells
Immune system
How do porcupines use their quills as an external defense?
They throw their quills at predators
Their quills release poison when touched
Their sharp quills can injure predators that come too close
Their quills help them blend in with their surroundings
Which tissue is mainly responsible for photosynthesis in leaves?
Palisade mesophyll
Spongy mesophyll
Epidermis
Xylem
How do insects exchange gases?
Through lungs
Through gills
Through tracheal tubes
Through spiracles
While xylem transports water, what is the process of phloem moving sugars produced during photosynthesis from leaves to other parts of the plant called?
Translocation
Transpiration
Photosynthesis
Assimilation
Is cartilage considered a bone?
Yes, it's a type of bone tissue
No, it's softer than bone
Yes, it's a flexible bone
No, it's a different type of connective tissue
Which organ in animals is mainly responsible for removing nitrogenous wastes from the blood?
Lungs
Heart
Kidneys
Stomach
How does sweating help animals maintain homeostasis?
It makes the animal stronger
It helps the animal grow
It cools the body when it is hot
It helps the animal sleep
Which external plant defense reduces water loss and protects against pathogens?
Cuticle
Xylem
Phloem
Stomata
Which plant structure mainly provides support and transports water and nutrients to different parts of the plant?
Leaves
Stem
Roots
Flowers
What is the main role of transpiration in plants?
To make food for the plant
To store water in the roots
To release excess water and help move water upward in the plant
To protect the plant from insects
Which nutrient is most important for building and repairing an animal’s body tissues, such as muscles and skin?
Carbohydrates
Fats
Proteins
Minerals
Which structure in a flowering plant develops into a seed after fertilization?
Ovary
Ovule
Anther
Stigma
What process allows a seed to grow into a young plant?
Pollination
Fertilization
Germination
Photosynthesis
Which organ mainly helps regulate water balance in most animals?
Lungs
Heart
Kidneys
Stomach
Excess water in the body is mainly removed through...
Sweat and urine
Breathing
Hair and nails
Bones
