Q1Science Mind Challenge.Average.Part2.2024

Suppose 60 ants live in a 4 sq m plot of grass. What would be the population density of the ants?

• 0.07 per sq. m   

• 15 per sq. m

• 64 per sq. m

• 240 per sq.m

How does climate change primarily contribute to species extinction?

• By increasing natural predator populations

• By altering habitats and temperature conditions

• By reducing pollution levels

• By increasing genetic diversity

Which of the following best explains why planting trees and putting up urban gardens can help

       prevent global warming?

• Plants use up carbon dioxide during photosynthesis, release oxygen to the environment and

       perform transpiration

• Plants absorb carbon dioxide that contributes to the rising of earth’s temperature

• Plants produce oxygen during daytime and perform transpiration

• Plants perform photosynthesis

 A farmer is experiencing a problem in growing his crops. Most of the leaves of the crops are

      turning yellow. Which of the following will likely result from the yellowing of the leaves of the

      crops?

• It will decrease the production of food. 

• The production of food will remain the same.

• It will increase the production of food. 

• The production of food will stop

A student from section Lambert wants to know if leaves can make food during

      nighttime. Which of the following experimental design should the student do to get an accurate

      answer?

               

• Cover the plant with a paper bag overnight and test for the presence of starch

• Put one potted plant in a very dark place overnight and test the presence of starch

• Cover one leaf of a potted plant with carbon paper for two hours and test the presence of

                 starch

• Put one potted plant under the sun and another in a shaded area for two hours and test the  

                presence of starch              

The following statements accurately describe the relationship between photosynthesis and

       cellular respiration EXCEPT:

               

• The cell structure involved in photosynthesis is chloroplast while in cellular respiration is

                  mitochondria

• The starting/raw materials of photosynthesis are carbon dioxide and water while in cellular respiration are sugar and oxygen

• The product of photosynthesis are sugar, oxygen, and water while in cellular respiration are carbon dioxide and water

• The energy requirement during the photosynthetic process is light energy while in cellular respiration is sugar.

Why is light required during the light-dependent reaction?

              

• because it is the source of electrons

• because it splits the water molecule

• because it energizes electrons in the reaction center

           

• because it splits ATP molecules which generates the energy necessary to power the light independent reactions                      

How do plants trap energy from the sun to make their own food?

               

• By using chlorophyll in the chloroplasts to capture sunlight

• By converting sunlight in the epidermis cells

• By absorbing sunlight through the cuticle

• By storing sunlight in the xylem vessels

How does the process of cellular respiration differ from photosynthesis?

• Cellular respiration captures light energy, while photosynthesis produces ATP.
  

• Cellular respiration produces glucose, while photosynthesis breaks down glucose

• Cellular respiration occurs in the chloroplasts, while photosynthesis occurs in the mitochondria.

• Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.
  

Which of the following represents the correct chemical equation for photosynthesis?

• 6CO₂ + 6H₂O + light energy ----> C₆H₁₂O₆ + 6O₂

• 6CO₂ + 6O₂ + light energy ----> C₆H₁₂O₆ + 6H₂O

• 6CO₂ + 6H₂O ----> C₆H₁₂O₆ + 6O₂ + light energy

• 6CO₂ + 6H₂O ----> C₆H₁₂O₆ + 6O₂