Tag Archives: Plant Physiology Short Notes

Difference between Tropic Movements and Nastic Movements – Comparison Table

Tropic vs Nastic Movments

Tropic Movements vs Nastic Movements
Similarities and Differences between Tropic Movements and Nastic Movements in Plants

Tropic movements and Nastic movements are the two types of induced or paratonic movements of curvature in plants.

Tropic movements: The paratonic (induced) movement of growth is called tropic movements. Here the stimuli are external and unidirectional. Example: phototropic movements (movement towards the light) geotropic movements (movement towards gravity), chemotropic movements (movement towards chemicals) etc.

What is Phototropism

Nastic movements: The paratonic movements of variations are called nastic movements. Here the stimuli are external and diffused (not unidirectional). Example: nyctinastic movements (movements in response to darkness), Seismonastic movements or Thigmonastic movements (movements in response to touch) etc.

What is Nastic Movment

The present post discusses the Similarities and Differences between Tropic Movements and Nastic Movements in Plants with a Comparison Table.

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Difference between Short Day Plants and Long Day Plants – Comparison Table

Long day vs Short day Plants

Short-Day Plants vs Long-Day Plants
(Similarities and Differences between Short-Day Plants and Long-Day Plants)

Photoperiodism is the response of plants (or any organism) to the lengths of dark and light periods in a day. The changes in the duration of light and dark periods in a day are called photoperiods. In plants, the photoperiodism induces flowering. Based on the response towards photoperiodism, the plants are classified into two categories – Short-day plants (SDPs) and Long-day plants (LDPs).

Short-day plants (SDPs): These plants flower only in short days or their flowering is induced by short days. These plants cannot flower under the short nights.

Long-day plants (LDPs): These plants flower only in long days or their flowering is induced by long days.

The present post discusses the Difference between Short-day plants and Long-day plants with a Comparison Table.

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Difference between Phototropism and Photoperiodism – Comparison Table

Phototropism vs Photoperiodism

Phototropism vs Photoperiodism
Similarities and Differences between Phototropism and Photoperiodism in Plants

Phototropism: Phototropism is the growth or movement of plants (or any organism) in response to light. Phototropism can be of two different types – (1) Positive Phototropism – movement towards the source of light, (2) Negative phototropism – movement away from the light. Negative phototropism is also called as Skototropism.

Photoperiodism: Photoperiodism is the response of plants (or any organism) to the lengths of dark and light periods in a day. The changes in the duration of light and dark periods in a day are called photoperiods. In plants, the photoperiodism induces flowering.

What is Phototropism

The present post discusses the Similarities and Differences between Phototropism and Photoperiodism

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Difference between Photoperiodism and Vernalization in Plants

Photoperidism vs Vernalization

Photoperiodism vs Vernalization
Similarities and Differences between Photoperiodism and Vernalization in Plants

The Photoperiodism is defined as the developmental responses of plants to the relative lengths of light and dark periods. It is a physiological reaction of plants to the length of day or night time. Plants sense the seasons by sensing the variations in photoperiods (length of day and night times in a day). The most important response of photoperiodism in plants is the induction of flowering. The Vernalization is a process of induction of flowering in plants by exposing them to prolonged cold temperature. The present post discusses the Similarities and Differences between Photoperiodism and Vernalization in Plants with a Comparison Table.

Similarities between Photoperiodism and Vernalization

Ø  Both Photoperiodism and Vernalization are physiological process in plants.

Ø  Both influence the flowering in plants.

Ø  Both processes are mediated through plant hormones.

Ø  Both can occur naturally or artificially.

Ø  Both have agricultural applications.

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Difference between the Physiological Response of Auxins and Gibberellins in Plants

Compare Effect Auxin Gibberellin

Physiological Effects of Auxins vs Gibberellins
(Difference between the Physiological Effects of Auxins and Gibberellins in Plants)

Auxins and Gibberellins are two major classes of plant hormones. Both hormones significantly influence the growth and various developmental processes in plants such as organogenesis, root initiation, sex expression, flowering etc. The physiological responses of Auxins and Gibberellins show many differences. The present post discusses the difference between the physiological effects of Auxins and Gibberellins in plants with a comparison table.

Difference between the Effects of Auxins and Gibberellins

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