Question 1

What factor differentiates sexual reproduction from asexual reproduction?

Accepted Answer

Fertilization

Answer

Environment

Answer

Habitat

Answer

Species

Question 2

What is the method of reproduction shown in the image?

Accepted Answer

Sexual and external fertilization

Answer

Sexual and internal fertilization

Answer

Asexual and internal fertilization

Answer

Asexual and external fertilization

Question 3

The following are the events in internal fertilization. How will you arrange the following events in chronological order?

I. Fertilization occurs inside the female body.

II. Sperm cell travels along the female reproductive part.

III. Sperm cell fuses with the ovum.

Accepted Answer

II,III, I

Answer

I, II III

Answer

III, I, II

Answer

II,I, III

Question 4

The picture below shows fragmentation in planaria. How does fragmentation differ from budding?

Accepted Answer

Regeneration occurs using fragments of an organism.

Answer

It is exhibited by most invertebrates.

Answer

It requires mature pieces growing from parent.

Answer

It requires an aquatic environment for it to occur.

Question 5

The figure below demonstrates how parthenogenesis occurs in some lizards. Which of the following is TRUE of parthenogenesis?

Accepted Answer

An offspring is produced even without a sperm cell to fertilize the egg.

Answer

It requires two gametes which are male and female sex cells.

Answer

Sperm cell fertilized the egg externally.

Answer

Offspring can grow directly out of the body of the parent animal.

Question 6

The integumentary system consists of different organs which function for maintenance of homeostasis, protection, coverage, and defense. What kind of integumentary system does the following mollusks have?

Accepted Answer

Shell

Answer

Feather

Answer

Skin

Answer

Hair

Question 7

Which of the following statements BEST describes the Respiratory system?

Accepted Answer

This body system’s function is to regulate gas exchange.

Answer

This body system processes food for nutrient absorption.

Answer

This organ system isresponsible for the internal transport of oxygen, nutrients and wastes throughout the body.

Answer

This organ system provides protection, coverage, and defense.

Question 8

Which of the following is NOT the function of the digestive system?

Accepted Answer

Regulating gas exchange

Answer

Storing energy reserves

Answer

Ingestion of food

Answer

Processing of food for nutrient absorption

Question 9

Which of the following is NOT TRUE about cells?

Accepted Answer

Cells are found only in specific areas of the body.

Answer

Cells are the functional elements of living organisms.

Answer

Cells are building blocks that make a tissue.

Answer

Cells are the smallest unit of life.

Question 10

What do stomach, skin, and lungs have in common?

Accepted Answer

They are organs of the body.

Answer

They look the same in all species.

Answer

They are all present in living organisms.

Answer

They have similar functions.

Question 11

Which of the following best explains why humans sweat when they feel hot?

Accepted Answer

maintain the internal environment

Answer

use energy

Answer

ability to reproduce

Answer

ability to grow

Question 12

Living organisms cannot live alone, they are interacting with the abiotic factors for sustainability of life. Which among the organisms is considered as the abiotic?

Accepted Answer

light

Answer

man

Answer

bacteria

Answer

plant

Question 13

Fill in the gap: A nice smell of a plant is an adaptation that ______________

Accepted Answer

attracts the pollinators

Answer

helps the plant to keep the nutrients inside.

Answer

pushes away the animals that try to eat them.

Answer

regulates the internal environment

Question 14

Makahiya plant closes its leaflets when touched. What is this an example of?

Accepted Answer

response to stimuli

Answer

form and structure

Answer

reproduction and inheritance

Answer

energy and life

Question 15

Which among the given examples describes the unifying theme of form and structure?

Accepted Answer

bats have wings specialized for flying

Answer

living things arise from pre-existing cells

Answer

light as source of energy

Answer

cellular basis of life

Question 16

Which of the following are TRUE of genetic engineering?

I. Produces a desirable trait

II. Involves the transfer of a specific gene

III. Gene can come from a different organism

IV. Gene can only come from the same organism

Accepted Answer

I,II, and III

Answer

I,II, and IV

Answer

II and III

Answer

I and II

Question 17

The following are benefits of using GMOs EXCEPT one. Which one is it?

Accepted Answer

Antibiotic resistance

Answer

Insect resistance

Answer

Nutrient enrichment

Answer

Virus resistance

Question 18

One common genetically modified crop is Bt-corn. For Bt corn, the desired gene is the gene from Bacillus thuringiensis bacteria that codes for a protein toxic to Asian Corn Borers- the most common pest to attack corns. What could be the direct risk from cultivating and farming Bt corn?

Accepted Answer

Mixing of genes with other corn varieties

Answer

Sustaining cancer cells

Answer

Resistance from the pathogenic pests

Answer

Extinction of all the corn species

Question 19

Which of the following is the first step in making a genetically engineered corn or Bt corn?

Accepted Answer

Extract DNA from Bt bacteria

Answer

Modify corn gene

Answer

Modify Bt gene

Answer

Insert Bt gene into corn cells

Question 20

Which of the following are TRUE?

I. Venomous cabbage can resist insects.

II. Genetically modified corn is susceptible to Asian Corn Borer.

III. Transgenic papaya is resistant to Ringspot Virus.

IV. Golden rice has the same nutrients as ordinary rice.

Accepted Answer

I and III

Answer

II and III

Answer

III and IV

Answer

I and II

Question 21

Gastropods and bivalves are all part of Phylum Mollusca. What

characteristic is used to classify such species?

Accepted Answer

Number of shell present

Answer

Where they are found

Answer

Texture of their flesh inside

Answer

Hardness of the shell

Question 22

Climber plants like money plant and pea plant have weak ands oft stem that they need support to stand and grow straight, while creeper plant like watermelon and pumpkin have soft green stem as they grow along the ground. What characteristic was used in classifying these kinds of plants?

Accepted Answer

Having weak stems

Answer

How the plants grow

Answer

Kind of fruit they bear

Answer

Due to longer roots

Question 23

Grizzly bear, polar bear, and panda are all types of bears. They can be classified in various ways They can be classified in various ways EXCEPT for what?

Accepted Answer

Color of fur

Answer

Height

Answer

What they eat

Answer

Habitat

Question 24

In what ways are the following plants being classified by?

Group 1: mango tree, rose, squash

Group 2: water lily, lotus

Group 3: moss, fern

Accepted Answer

Habitat

Answer

Presence of flowers

Answer

Height

Answer

Shape of leaves

Question 25

What adaptation does a zebra have in order to escape its predator?

Accepted Answer

Stripes on its skin

Answer

Fast legs

Answer

Its size and height

Answer

Ability to attack

Question 26

Biotic potential is the organism's maximum reproductive capacity under an optimum condition. Which of the following factors would limit the biotic potential?

I. insufficient space

II. sufficient sunlight

III. favorable weather condition

IV. destruction and pollution caused by humans

Accepted Answer

I and IV

Answer

III and IV

Answer

II and III

Answer

I and II

Question 27

The following are examples of environmental resistance except one. Which is it?

Accepted Answer

Efficient seed dispersion

Answer

Parasites

Answer

Scarcity of food prey

Answer

Lack of water

Question 28

What do we call the totality of all factors that prevent the growth of the population of an organism?

Accepted Answer

Environmental resistance

Answer

Carrying capacity

Answer

Biotic factor

Answer

Abiotic factor

Question 29

What do we call the maximum size of population that an ecosystem can support indefinitely?

Accepted Answer

Carrying capacity

Answer

Abiotic factor

Answer

Environmental resistance

Answer

Migration

Question 30

Which of the following is an abiotic factor?

Accepted Answer

Ample water supply

Answer

Neighboring organisms

Answer

Migration

Answer

Defense mechanism

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