Plant and Animal Reproduction

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Listen to an AI-generated conversation about this lesson

Questions and Answers

Which of the following best illustrates the relationship between homologous structures and analogous structures?

  • Wings of a bird and wings of a butterfly (homologous), human arm and bat wing (analogous).
  • Wings of a bird and bat wing (homologous), human arm and butterfly wing (analogous).
  • Wings of a bird and wings of a butterfly (analogous), human arm and bat wing (homologous). (correct)
  • Wings of a bird and bat wing (analogous), human arm and butterfly wing (homologous).

A plant physiologist is studying water transport in tall trees. If they disrupt the cohesion of water molecules within the xylem, which theory of water transport would be MOST directly affected?

  • Capillary Theory
  • Cohesion-Tension Theory (correct)
  • Root Pressure Theory
  • Transpiration

A farmer notices stunted growth and yellowing leaves in their crops. After testing the soil, they find a severe nitrogen deficiency. Which of the following processes is MOST directly affected by this deficiency, hindering the plant's ability to utilize atmospheric nitrogen?

  • Nitrogen Fixation (correct)
  • Elongation
  • Transpiration
  • Maturation

During an asthma attack, a person's airways constrict, making it difficult to breathe. Which of the following steps of respiration is MOST directly hindered by this constriction?

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

A patient's ECG shows an abnormal pattern, indicating a potential heart problem. Which component of blood is MOST directly involved in the heart's function and detected by the ECG?

<p>Red Blood Cells (RBCs) (A)</p> Signup and view all the answers

A person experiences a sudden increase in heart rate and sweating while facing a stressful situation. Which part of the nervous system is primarily responsible for these immediate physiological responses?

<p>Autonomic Nervous System (ANS) (A)</p> Signup and view all the answers

A child receives a vaccine against measles. This vaccine triggers which type of immune response?

<p>The vaccine activates immunity and prevents diseases. (D)</p> Signup and view all the answers

A scientist is using PCR and RDNA technologies to enhance crop yield. What is the primary goal of modifying the genes of these crops?

<p>To alter characteristics. (D)</p> Signup and view all the answers

Which process directly leads to the formation of a seed with stored food reserves?

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

In the context of Mendelian genetics, what distinguishes a recessive trait from a dominant trait?

<p>A recessive trait is only expressed in the homozygous state, while a dominant trait can be expressed in both homozygous and heterozygous states. (D)</p> Signup and view all the answers

What is the significance of 'crossing over' in the context of genetic inheritance?

<p>It disrupts the linkage between genes, promoting genetic variation. (B)</p> Signup and view all the answers

How does the process of DNA replication ensure genetic continuity?

<p>By using one strand from the old DNA molecule as a template to create a complementary new strand, resulting in two identical DNA molecules. (B)</p> Signup and view all the answers

Which of the following contributes to genetic variation, according to the modern synthetic theory of evolution?

<p>Genetic variation, natural selection, and isolation (C)</p> Signup and view all the answers

How do reproductive and geographical isolation contribute to speciation?

<p>By preventing gene flow between populations, allowing them to diverge genetically over time. (D)</p> Signup and view all the answers

What is the relationship between morphology and anatomy in the study of living organisms?

<p>Morphology is the study of an organism's external form, while anatomy is the study of its internal structure. (C)</p> Signup and view all the answers

How does the chromosomal theory of inheritance connect Mendel's laws with the physical structures of cells?

<p>It proposes that genes are located on chromosomes, which undergo segregation and independent assortment during meiosis, mirroring Mendel's laws. (D)</p> Signup and view all the answers

Flashcards

Sexual Reproduction

Reproduction involving fusion of gametes from two parents.

Asexual Reproduction

Reproduction with no fusion of gametes, offspring are clones of the parent.

Pollination

Transfer of pollen from the anther to the stigma of a flower.

Fertilization

The fusion of male and female gametes to form a zygote.

Signup and view all the flashcards

Genetics

Study of genes, heredity, and variation in living organisms.

Signup and view all the flashcards

Recessive Trait

A trait expressed only when two copies of the gene are present.

Signup and view all the flashcards

Gene Mutation

Change in the nucleotide sequence of a gene.

Signup and view all the flashcards

Modern Synthetic Theory

The theory that evolution occurs through the accumulation of small genetic changes (variation), acted upon by natural selection, within isolated populations.

Signup and view all the flashcards

Homologous Structures

Structures with similar anatomy but different functions.

Signup and view all the flashcards

Transpiration

Water loss from a plant, mainly through stomata.

Signup and view all the flashcards

Plant Growth Stages

Stages include cell multiplication, lengthening, and specialization.

Signup and view all the flashcards

Nitrogen Fixation

Conversion by bacteria of nitrogen gas into usable forms like nitrates.

Signup and view all the flashcards

Respiration Steps

Breathing, external respiration, internal respiration, and cellular respiration.

Signup and view all the flashcards

Blood Composition

Plasma, red blood cells (RBCs), white blood cells (WBCs), and platelets.

Signup and view all the flashcards

Divisions of the Nervous System

Central Nervous System, Autonomic Nervous System, Peripheral Nervous System.

Signup and view all the flashcards

Vaccine

A substance given to stimulate the immune system to produce antibodies.

Signup and view all the flashcards

Study Notes

The text provided appears to contain no information not already represented in the existing notes. No changes have been made.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Use Quizgecko on...
Browser
Mobile App
Open
Browser
Browser