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Plant Biology

Plant biology is the study of plant species, which encompasses understanding all aspects required for plant life and proper functioning. In a basic sense, plants, similar to animals, are living organisms which require water, oxygen and nutrients to grow and depend on glucose to produce energy.

The study of plant biology requires an understanding of the biochemical and physiological processes required for development and growth. The processes of photosynthesis and respiration are absolutely essential for plant life. Any mutations in the enzymes or machinery involved in these processes could lead a plant to cease functioning. Furthermore, in terms of physiology, it is important to understand the structure of a plant at both the cellular and organism level, to comprehend how a plant is able to function on a day-to-day basis.

Plants are extremely diverse and thus, there are a variety of different species. According to a report from 2011, done by the United Nations Environment Programme, there are about 298 000 plant species on Earth and not all of these plants have been discovered (1). Evidently, there are a variety of unique plants present all around the globe. Thus, plant taxonomy is another important field in plant biology because it is this discipline which provides a way to classify and name all of these species.

Aside from all the pure scientific topics related to plant biology, plant biology also includes learning the multiple ways in which plants can be utilized. For example, plants can be used as a food source, for medicinal purposes and as clothing, among other functions. Additionally, plant biotechnology is becoming an important field of exploration as more research is being conducted and illustrating that plants have many real-world applications.

Plant biology is an exciting field of science which covers a wide spectrum of topics. Since early civilizations, much knowledge has been gained with regards to the inner-workings of plants. However, further research is still rigorously being performed to provide a full understanding of the intricacies of plant organisms.  



Categories within Plant Biology

Plant Structure and Development

Postings: 14

Plant structure and development is a topic which considers plant synthesis at both the cellular and organismal levels and how this influences plant growth.

Stress Response

Postings: 1

A stress response is an adverse reaction experienced by a plant due to an abiotic factor, such as high salinity, which a plant may encounter in its environment.

Plant Diversity

Postings: 20

Plant diversity encompasses the total variation of plant species which exists.


Postings: 11

Biotechnology is a type of technological advancement which incorporates the application of engineering principles and benefits the biological sciences.


Postings: 1

Algae represent a large, photosynthetic plant-like group which vary from being unicellular to multicellular.

Biology Revision questions Solutions

This is not for an assignment. It is to study for an exam and I need help to make sure I am on the right track. Thank you. (5 marks) 4. How do fern gametophytes differ from moss gametophytes? (6 marks) 6. How are the excretory organs of annelids different from those of insects? (6 marks) 7. Explain the African Emerge

Hardy-Weinberg Problem

Using the Hardy Weinberg equilibrium, calculate the frequencies of this situation: 500 individuals have 80 green flowered plants; the remaining plants have blue flowers. You know that flower colour is determined by one gene with two alleles. Looking at your population, can you determine which allele is dominant? Calculat

Hydra, Nematodes and Planarians

Describe for hydra, nematodes and planarians: - symmetry - shape - germ layers - body covering - cephalization - coelomic cavity - masculature - digestive tract and digestion - excretion - nervous system - sense organs - sexual reproduction - asexual reproduction.


1. What is the relationship between an increase in light intensity and photosynthetic rate in leaves from a corn plant? How does this relationship compare with tomato plants? 2. Photosynthetic saturation is the maximum rate of photosynthesis. What value of light intensity produced photosynthetic saturation in corn leaves?

Photosynthesis and Thermodynamics

Be certain to describe three or more ways in which the plant cell and the solar cell are similar to each other, as well as three or more ways in which they are different from each other. In addition, please explain how the laws of thermodynamics apply to each system.

Scientific method is depicted.

You grow three plants with a light to the left of them and three plants with a light to the right of them. The leaves of the plants with the light on the left turned toward the left and the tops of the plants grew toward the left. The leaves of the plants with the light on the right turned toward the right and the tops grew t

Stearidonic Acid (SDA) in Soy Plants

1) The biochemical pathway by which SDA is produced in the modified soya plants is shown in the diagram attached. The fatty acids and transformation shown in black occur naturally in unmodified soya, whilst those shown in red are those which occur as a result of the modification process. In the case of genetic modification to

study the effects of geotropism and auxin on plant development

Geotropism Lab 1. Why do plants always grow the correct way? The stems and leaves always grow up, and the roots always grow downward, but, how do they know which way is which? What keeps them from getting confused and growing upside down? Look up the word "auxin" and describe its function. 2. What does the word geotropis

Tissue water potential

2a. Graph the change in weight versus the concentration of mannitol . Draw on the graph how you would estimate the water potential of the tissue 2b. Graph the change in length versus the concentration of mannitol. Draw on the graph how you would estimate the water potential of the tissue 3. From your graph wha

Botany, Crop Science

1. Please label the five parts (per drawing, attached). ? (Perhaps- Label according to position of identification boxes (from top to bottom), with some description). 2. In double fertilization, one sperm units with the egg nuclei to form the zygote, and the other sperm unites with the two polar nuclei to form wh

Find an angiosperm that has modified leaves, stems, roots, or flowers.

Find an angiosperm that has modified leaves, stems, roots or flowers that do not function in the normal manner, or that function in an unusual manner. Angiosperms (flowering plants) are the largest Phylum in the plant kingdom (Angiospermophyta is also called Anthophyta or Magnoliophyta). These plants have true roots, stems, l

Transgenic Plants Biotechnology

(Transgenic plants) 1.Briefly describe this biotechnology application. 2.How is it used today. 3.Based upon the definition of biotechnology, describe how this biotechnology application is an example of biotechnology. 4.What benefits are derived from this application? 5.Are there any concerns or negative impacts as

Photosynthesis and Aerobic Cellular Respiration

What is the name given to the types of organisms that can use photosynthesis to produce glucose? In addition, provide (3)THREE specific examples. What is the name given to the types of organisms that exclusively use cellular respiration to break down glucose to produce ATP for energy? In addition, provide (3)THREE specific exa

Anatomical Features of Angiosperms

Angiosperms (flowering plants) are the largest Phylum in the Plant Kingdom (Angiospermophyta is also called Anthophyta or Magnoliophyta). These plants have true roots, stems, leaves and flowers. The roots grow into the soil to anchor the plant in place and take up water and nutrients. The leaves are above ground and act as the m

Photosynthesis vs. Respiration Chart

Cellular Respiration and Photosynthesis co-exist as paired metabolic processes. Photosynthesis uses light energy to convert carbon dioxide into glucose, a simple sugar, in two steps, the light dependent and light independent reactions. Oxygen is produced as a by product during photosynthesis. This reaction stores energy in th

Co-Existence of Respiration and Photosynthesis

Part 1: Fill out the following table to compare and contrast Photosynthesis and Aerobic Cellular Respiration. Photosynthesis Aerobic Cellular Respiration Full balanced equation Reactants Products Is this reaction endergonic or exergonic? State which one it is. Energy source used Cell organelles invo

Does the direction of sunlight affect phototrophic movements?

Start by observing the living species around you. Ever wonder why a pollinator is attracted to a particular flower, or what would happen to predator species if a particular prey species is eliminated? If you were a scientist you could do an experiment to answer your question. For this assignment, choose two non-human species

Fungi: Mycorrhizae

1. Why do mosses and ferns both require free water to complete their life cycles? At what stage of the life cycle is the water required? Do angiosperms also require water to complete their life cycles? What are the reasons for the difference? 2. How are cells of a liverwort supplied with water? 3. Flowering plants evolved s

Biology questions involving Mosses

1. If you were looking for mosses, what are some of the characteristics of the habitats in which you would take? Explain your answer based on your knowledge of bryophyte life history. 2. Compare and contrast the alternation of generations in mosses, ferns and pines. Which generation is dominant in each case? Is it haploid or

Role of Chlorophyta in evolution of multicellular forms

1. What is the evolutionary significance of the Chlorophyta? Why is Chlamydomonas an important member of this group? 2.Describe and give examples of two separate paths by which multicellular organisms evolved from unicellular organisms. 3.Would you classify the Prostists as chemotrophs or phototrophs. Explain you answer.

30 Multiple Choice Biology Questions

Question 1 Plant leaves appear green because they ____ light spectrum. a. Scatter all colors except the green portion of the visible. b. Scatter the green portion of the visible. c. Absorb the green portion of the visible. d. Scatter the green portion of the ultraviolet. Question 2

What effect would increased carbon dioxide have on plants?

One of the most dramatic environmental changes today is the increase in carbon-dioxide levels in the atmosphere. We usually hear about it in connection with global warming, but that's not the only issue. What effect would increased carbon dioxide have on plants? If more trees are planted, would this stand to have any effect on a

Cells & Plant Seed Characteristics

Please help with the following problem. List the main reason why a cell is forced to divide due to cell growth. If a tall round seed plant is crossed with another plant. From the following information provided. Tall dominate, round dominant, and both are heterozygous. Draw the Punnett Square showing the first generation.


Observing Oxygen Evolution During Photosynthesis. See attached file for full problem description.