Question 1

Which of the following best describes the main difference between the root and shoot systems in vascular plants?

Accepted Answer

The root system anchors the plant and absorbs water and minerals, while the shoot system supports leaves and flowers for photosynthesis and reproduction.

Question 2

Which plant tissue type is primarily responsible for transporting water and dissolved minerals from roots to shoots?

Accepted Answer

Vascular tissue

Question 3

A botanist observes a tree increasing in girth (width) over several years. Which process and tissue are primarily responsible for this growth?

Accepted Answer

Secondary growth by lateral meristems

Question 4

Which equation correctly represents the overall process of photosynthesis?

Accepted Answer

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2O \rightarrow C_6H_{12}O_6$ + 6\ \mathrm{O}_2$$

Question 5

Which of the following best explains why most plants appear green?

Accepted Answer

Chlorophyll reflects green light, which is not absorbed during photosynthesis.

Question 6

Which mutualistic relationship is essential for most terrestrial plants to acquire phosphorus from the soil?

Accepted Answer

Association with mycorrhizal fungi

Question 7

Which of the following best describes the role of insulin in glucose homeostasis?

Accepted Answer

Insulin decreases blood glucose by promoting uptake of glucose into cells.

Question 8

A patient is diagnosed with an autoimmune disease in which their immune system attacks their own pancreatic beta cells. Which hormone would be most directly affected?

Accepted Answer

Insulin

Question 9

Which of the following is an example of negative feedback in human physiology?

Accepted Answer

Sweating to cool the body when body temperature rises above normal.

Question 10

Which of the following best describes the path of blood through the mammalian heart and lungs?

Accepted Answer

Right atrium → right ventricle → pulmonary artery → lungs → left atrium → left ventricle → aorta

Question 11

Which of the following is a correct sequence for the pathway of air from the external environment to the site of gas exchange in humans?

Accepted Answer

Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → alveoli

Question 12

Which of the following animals excretes uric acid as its primary nitrogenous waste, and what is the main advantage of this adaptation?

Accepted Answer

Birds; uric acid conserves water by being excreted as a paste

Question 13

Which hormone is secreted by the adrenal medulla and is responsible for the 'fight or flight' response?

Accepted Answer

Adrenaline (epinephrine)

Question 14

Which of the following best explains the role of myelin in the conduction of action potentials along a neuron?

Accepted Answer

Myelin insulates the axon, allowing action potentials to jump between nodes of Ranvier, increasing conduction speed.

Question 15

Which of the following best describes the sliding filament model of muscle contraction?

Accepted Answer

Myosin heads bind to actin, pulling the actin filaments toward the center of the sarcomere, resulting in muscle contraction.

Question 16

Which of the following is an example of a positive feedback mechanism?

Accepted Answer

Release of oxytocin during childbirth, intensifying uterine contractions

Question 17

Which of the following best describes the difference between endotherms and ectotherms?

Accepted Answer

Endotherms maintain a constant body temperature through metabolic heat, while ectotherms depend on environmental heat sources.

Question 18

Which of the following best describes the relationship between photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis stores energy in glucose, while cellular respiration releases energy from glucose.

Question 19

Which of the following is a correct representation of exponential population growth?

Accepted Answer

$$\frac{dN}{dt} = rN$$

Question 20

Which of the following interspecific interactions benefits one species and harms the other?

Accepted Answer

Parasitism

Comprehensive Study Guide: Plant and Animal Biology for Final Exam

Study Guide - Practice Questions

Study Guide - Flashcards