Biology Plant and Bacterial Growth Quiz
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Questions and Answers

What is demonstrated when a plant grows towards a window?

  • A plant's growth rate
  • A plant's resistance to environmental changes
  • A plant's response to stimuli (correct)
  • A plant's nutrient absorption capability

What is the best method to test the hypothesis that temperature affects bacterial growth rate?

  • Analyze bacterial growth using chemical additives
  • Monitor the bacteria growth at room temperature
  • Grow the bacteria at different temperatures and measure growth rates (correct)
  • Grow the bacteria in a constant temperature

Which factor is considered important when evaluating the claim that a plant can purify polluted water?

  • The type of soil the plant grows in
  • The researcher's reputation (correct)
  • The amount of water the plant consumes
  • The temperature of the water

Which of the following is an example of a plant's adaptation mechanism?

<p>Growing roots towards moist soil (A)</p> Signup and view all the answers

If a scientist wants to assess how light intensity affects plant growth, which approach would be most effective?

<p>Expose plants to varying light intensities and measure their growth (C)</p> Signup and view all the answers

What is the primary function of the anther in flowering plants?

<p>Produce pollen grains (D)</p> Signup and view all the answers

Which part of the flower is responsible for supporting the ovule?

<p>Ovary (A)</p> Signup and view all the answers

Which of the following methods is NOT a form of asexual reproduction?

<p>Pollination (D)</p> Signup and view all the answers

How does micropropagation differ from other asexual reproduction methods?

<p>It propagates large numbers of plants from a single plant. (A)</p> Signup and view all the answers

Which process initiates reproduction in flowering plants?

<p>Pollination (B)</p> Signup and view all the answers

Which of the following describes the method of layering in plant propagation?

<p>Covering a bent stem with soil while it is still attached to the parent plant (C)</p> Signup and view all the answers

What is a major benefit of asexual reproduction in plants?

<p>It allows for rapid population growth. (D)</p> Signup and view all the answers

What is the long, supportive structure that often connects the anther to the flower?

<p>Filament (A)</p> Signup and view all the answers

What is the primary function of mitochondria in plant and animal cells?

<p>To produce energy (B)</p> Signup and view all the answers

Which organelle is responsible for breaking down materials within the cell?

<p>Lysosome (A)</p> Signup and view all the answers

What structural feature is provided by the cell wall to plant cells?

<p>Protection and shape (B)</p> Signup and view all the answers

What role does the endoplasmic reticulum (ER) play in the cell?

<p>Transporting proteins (B)</p> Signup and view all the answers

Which organelle is specifically responsible for photosynthesis in plant cells?

<p>Chloroplast (B)</p> Signup and view all the answers

What type of substances do vacuoles primarily store?

<p>Water, food, and waste (C)</p> Signup and view all the answers

What is the main characteristic of the cell membrane?

<p>Semi-permeable membrane (D)</p> Signup and view all the answers

Which adaptation would be most effective for a plant growing in a region with frequent wildfires?

<p>Thick, fire-resistant bark (B)</p> Signup and view all the answers

Which structure in the cell is known as the protein factory?

<p>Ribosome (B)</p> Signup and view all the answers

What mechanism of evolution involves the survival and reproduction of individuals with advantageous traits?

<p>Natural selection (A)</p> Signup and view all the answers

Why is genetic variation important in the process of evolution?

<p>It provides the raw material for natural selection to act upon (D)</p> Signup and view all the answers

What is it called when a farmer selectively breeds cows to produce more milk?

<p>Artificial selection (C)</p> Signup and view all the answers

If a predator prefers green beetles, what is the most likely outcome for the population over time?

<p>Brown beetles will have a higher survival rate, increasing their frequency (A)</p> Signup and view all the answers

What is considered the control center of the cell?

<p>Nucleus (D)</p> Signup and view all the answers

Which of the following best describes the role of the cell membrane?

<p>It allows materials to pass in and out of the cell. (A)</p> Signup and view all the answers

Which part of the cell contains DNA and controls cellular activities?

<p>Nucleus (D)</p> Signup and view all the answers

Why do desert animals often have large ears?

<p>To increase body surface area for cooling (D)</p> Signup and view all the answers

Which feature would most likely help a bird survive in a tropical rainforest?

<p>Camouflaged feathers (C)</p> Signup and view all the answers

How does body size impact an animal's ability to conserve heat in cold environments?

<p>Smaller animals conserve heat better due to a smaller surface area to volume ratio (A)</p> Signup and view all the answers

What is the best indicator that a forest-dwelling species has evolved to avoid predators?

<p>The animal has camouflage to blend in with its environment (C)</p> Signup and view all the answers

What feature is essential for an animal to survive in both forest and desert environments?

<p>Ability to store water in its body (A)</p> Signup and view all the answers

Which strategy is most effective to ensure plants in a greenhouse get enough water?

<p>Ensure proper drainage and water absorption by the roots (C)</p> Signup and view all the answers

What adaptation might a forest animal likely develop to increase its chances of survival?

<p>Ability to climb and evade ground predators (C)</p> Signup and view all the answers

Which characteristic is typically advantageous for animals living in cold climates?

<p>Larger body size for better heat retention (A)</p> Signup and view all the answers

Which process is characterized by the division of a cell into two genetically identical daughter cells?

<p>Mitosis (C)</p> Signup and view all the answers

Which of the following correctly describes a function of light-dependent reactions in photosynthesis?

<p>They convert sunlight into chemical energy stored in ATP and NADPH (D)</p> Signup and view all the answers

What term is used for organisms that can produce both male and female gametes?

<p>Hermaphrodites (A)</p> Signup and view all the answers

What role does meiosis play in genetic inheritance?

<p>It produces cells with half the genetic material, ensuring genetic diversity (C)</p> Signup and view all the answers

Which adaptation is most beneficial for animals living in cold environments?

<p>Thick fur or blubber (D)</p> Signup and view all the answers

Which factor should be critically evaluated when considering a research claim about a plant's ability to purify water?

<p>The experimental methods used to test the plant’s ability (B)</p> Signup and view all the answers

What is a common misconception about the process of binary fission?

<p>It is a form of sexual reproduction (A)</p> Signup and view all the answers

What observation might indicate that temperature affects bacterial growth?

<p>Bacteria grow slower in colder conditions (B)</p> Signup and view all the answers

What is the primary advantage of internal fertilization over external fertilization?

<p>It has a higher survival rate for offspring. (D)</p> Signup and view all the answers

Which statement best describes DNA?

<p>It carries genetic information and resembles a twisted ladder. (B)</p> Signup and view all the answers

What is genetic engineering primarily concerned with?

<p>Identifying and altering genes. (B)</p> Signup and view all the answers

What role do genes play in living organisms?

<p>They carry instructions for development and function. (C)</p> Signup and view all the answers

Which of the following organisms typically undergoes external fertilization?

<p>Fish (B)</p> Signup and view all the answers

Where are genes located within the cell?

<p>On chromosomes inside the nucleus (C)</p> Signup and view all the answers

What is micropropagation primarily used for?

<p>Propagating multiple plants from a single source quickly. (A)</p> Signup and view all the answers

What is gene splicing primarily used for?

<p>To isolate a specific gene from an organism. (A)</p> Signup and view all the answers

Flashcards

Plant response to stimuli

Plants react to things in their environment (like light).

Testing bacterial growth

Experimenting with different temperatures to see how it impacts bacteria growth.

Evaluating water purification claim

Looking at factors beyond just the researcher's work, like their reputation.

Plant Tropism

A plant's growth response to a stimulus, like light or gravity. It can grow towards or away from the stimulus.

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Scientific Method

A structured way to investigate a phenomenon, involving observation, hypothesis, experimentation, and analysis.

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Evaluating Scientific Claims

Examining the evidence and methodology used to support a claim, considering factors beyond the researcher's reputation.

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Light-Dependent Reactions

The first stage of photosynthesis, converting light energy into chemical energy stored in ATP and NADPH.

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Asexual Reproduction

Reproduction without the involvement of sex cells, producing offspring genetically identical to the parent.

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Mitosis

Cell division producing two genetically identical daughter cells, important for growth and repair.

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Hermaphrodite

An organism with both male and female reproductive organs.

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Meiosis and Inheritance

Division of sex cells to produce gametes with half the chromosomes, ensuring offspring inherit genetic material from both parents.

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Desert Animal Ears

Large ears in desert animals help them to radiate heat away from their bodies, keeping them cool in hot environments.

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Tropical Rainforest Bird

Camouflaged feathers help birds blend in with their surroundings in a dense rainforest, providing protection from predators.

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Body Size & Heat Conservation

Larger animals tend to conserve heat better in cold environments because they have a smaller surface area to volume ratio, minimizing heat loss.

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Forest Dweller vs. Desert Dweller

Camouflage is a key adaptation for animals living in forests, helping them avoid predators by blending in with their surroundings.

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Survival in Both Environments

The ability to store water is crucial for an animal surviving in both a forest and a desert, as water availability can be unpredictable.

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Plant Wilting Prevention

Ensuring proper drainage and water absorption by the roots is key to preventing wilting in plants, as it allows them to access the water they need.

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Fire-resistant bark

A thick, protective outer layer that helps plants survive wildfires by minimizing damage from heat and flames.

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Deep roots

Roots that extend far underground, allowing plants to access water sources even during drought or wildfires.

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Natural selection

The process where organisms with advantageous traits are more likely to survive and reproduce, passing those traits to their offspring.

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Genetic variation

Differences in genes among individuals within a population, providing the raw material for evolution.

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Artificial selection

Humans deliberately breed organisms with desired traits, selecting which individuals reproduce.

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Cell

The basic unit of life, containing all necessary components for function and reproduction.

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Nucleus

The control center of a cell, containing DNA and directing all cellular activity.

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Organelle

A specialized structure within a cell that performs a specific function, like a mini-organ.

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Vacuole

A storage compartment within a cell that holds water, food, and waste.

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Golgi Apparatus

Organelle that processes and packages proteins and lipids, preparing them for use within the cell or export.

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Lysosome

Organelle responsible for breaking down worn-out cell parts, waste, and invading bacteria.

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Ribosome

Organelle that manufactures proteins, essential for all cell functions.

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Cell Membrane

A protective barrier surrounding the cell, controlling the movement of substances in and out.

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Cytoplasm

The jelly-like substance within the cell that holds the organelles.

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Mitochondria

Powerhouses of the cell, producing energy in the form of ATP.

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Endoplasmic Reticulum (ER)

A network of tunnels within the cytoplasm, transporting proteins and lipids throughout the cell.

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What is an anther's function?

The anther is the part of the stamen that produces pollen grains. Pollen is necessary for pollination, which is the first step in plant reproduction.

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What is a stigma?

The stigma is the top part of the pistil, which is responsible for receiving pollen grains during pollination.

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What is an ovule?

An ovule is a structure within the ovary of a flower that contains the female gamete, which is the egg cell.

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Grafting

Grafting is a technique where a piece of a desired stem is joined to a rootstock to produce a new plant with the desired traits.

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Cutting

A cutting is a piece of a plant's stem that's been removed and placed in soil to develop new roots and grow into a new plant.

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Layering

Layering is a method of asexual reproduction where a stem is bent and covered with soil to create roots.

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Micropropagation

Micropropagation is a technique for producing new plants from a small piece of tissue under controlled laboratory conditions.

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Internal Fertilization

The union of male and female gametes (sperm and egg) inside the female's body. This is common in mammals, birds, and reptiles.

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External Fertilization

The union of male and female gametes (sperm and egg) outside the female's body. This is typical for fish, amphibians, and some invertebrates.

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DNA

A molecule that carries genetic information in living things. It looks like a twisted ladder (double helix) and is found in the nucleus of our cells. DNA stands for deoxyribonucleic acid.

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Chromosome

Long, thread-like structures made of DNA and proteins found in the nucleus of cells. They carry many genes.

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Genetic Engineering

The science of identifying, isolating, and altering genes. It involves modifying the genetic makeup of an organism.

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Recombinant DNA Technology

Involves introducing a gene from one organism into another. This is a key technique in genetic engineering.

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Study Notes

Plant Growth and Response

  • A plant growing towards a window is an example of a response to stimuli.

Bacterial Growth

  • A scientist hypothesizing that temperature affects bacterial growth rate should grow bacteria at different temperatures and measure growth rates to test the hypothesis.
  • Observing bacteria in different environments or reading about bacterial growth in textbooks is not the best way to test this hypothesis.

Evaluating a Research Claim

  • When evaluating a claim that a plant can purify polluted water, the researcher's reputation is a crucial factor to consider.
  • The plant's appearance and growth rate also play a role.

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Science Reviewer Past Paper cher VI PDF

Description

Test your knowledge on plant growth responses and factors affecting bacterial growth. This quiz explores how plants react to stimuli and the importance of evaluating research claims in biology. Understand the connection between environmental factors and living organisms.

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