Pteridophytes
This note contains detail information about pteridophytes along with its general characteristics.
Summary
This note contains detail information about pteridophytes along with its general characteristics.
Things to Remember
- Pteridophytes are the plants having feather like leaf.
- They are also known as vascular cryptogams i.e. non-flowering plants with conducting tissue xylem and pholem.
- There are about 400 living and fossil genera and 1050 species in the world. In Nepal, there are about 383 species.
- Sporophytic plant is dominant and differentiated into root, stem and leaf. Sporophyte reproduced by formation of spores and spores are produced into sporangium. Sporangia are aggregated in sorus.
- In xylem vessel is absent and in pholem companion cell is absent.
MCQs
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Subjective Questions
Q1:
What do you mean by hemorrhoid ?
Type: Very_short Difficulty: Easy
Q2:
What are the types and stages of haemorrhoids ?
Type: Short Difficulty: Easy
<ol>
<li>External Hemorrhoids: Hemorrhoids may be external that is distal to anal sphincter.</li>
<li>Internal Hemorrhoids: Hemorrhoids that is proximal to anal sphincter.</li>
<li>Interno-external Hemorrhoids: Both of the hemorrhoids may be present at the same time.</li>
</ol>
<p>Stages or degree of Hemorrhoids</p>
<p>There are 4 stages or degree of hemorrhoids. They are :</p>
<ol>
<li>First degree Piles: Piles that bleed but do not bulge out of the anal opening.</li>
<li>Second degree Piles: Piles may prolapse during the passage of stool but they recede (draw back) on their own.</li>
<li>Third degree Piles: As the disease progresses the piles do not recede back on their own and have to be replaced by hand.</li>
<li>4. Fourth degree piles: In advance cases the Piles may prolapse anytime of the day (i.e. even with out the passage of stool) especially if the person is tired or exerts himself. These Piles remain permanently prolapsed.</li>
</ol>
Q3:
What are the treatment and management of haemorrhoids ?
Type: Long Difficulty: Easy
<ul>
<li>Local treatment</li>
<li>Application of hot and cold compress.</li>
<li>Analgesics ointment is given temporarily to relief pain and reduce edema around external and internal hemorrhoid.</li>
<li>Sitz bath is given to relief pain.</li>
<li>Stool softener is given to prevent constipation and to decrease irritation during defecation.</li>
<li>Symptomatic treatment</li>
<li>Good personal hygiene.</li>
<li>Increase fluid intake.</li>
<li>Avoid excessive straining during defecation.</li>
</ul>
<p>Surgical treatment</p>
<ul>
<li>Haemorrhoidectomy: after surgery</li>
<li>The pressure dressing and icepack are applied to lessen the bleeding.</li>
<li>Stool softener and sitz baths are recommended.</li>
<li>ligation: internal ligation may be treated by ligation of vessels.</li>
</ul>
<p>Nursing management</p>
<ul>
<li>Provide sitz bath to relive pain.</li>
<li>Maintain cleanliness to relive discomfort.</li>
<li>Avoid to take species, sweat containing food.</li>
<li>Manage appropriate measures for constipation or avoid constipation by timely defecation, plenty of fluid intake, fibers food in diet.</li>
<li>Give digestible, light nutritious food to mother.</li>
<li>Encourage for ambulation.</li>
</ul>
<p>Patient teaching</p>
<ul>
<li>Clean rectal area after each defecation until healing is complete.</li>
<li>Give higher fiber diet and high fluid and intake to avoid constipation.</li>
<li>Regular exercise and regular time for passing stool is most important during post operative periods.</li>
<li>Check for rectal bleeding and inform surgeon immediately in case of bleeding occurs.</li>
</ul>
<p> </p>
<p> </p>
Q4:
List the Signs and Symptoms of haemorrhoids ?
Type: Short Difficulty: Easy
<ul>
<li>Fresh bleeding from the anus.</li>
<li>Earlier painless but in severity, it is painful and bleeding.</li>
<li>Bleeding may be visible or non visible.</li>
<li>Heavy anal itching or difficult to defecate.</li>
</ul>
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Pteridophytes

Pteron-feather
phyton- plants
Pteridophytes are the plants having feather-like a leaf. They are also known as vascular cryptogams i.e. non-flowering plants with conducting tissue xylem and phloem. They are seedless vascular plants, primitive vascular plants. There are about 400 living and fossil genera and 1050 species in the world. In Nepal, there are about 383 species.
General characteristics
- They are mostly found in moist, shady and terrestrial habitat. Some of them are aquatic. Eg; Azolla. Some of them are epiphyte. Eg; Drynaria. They are mostly herbaceous and few are trees. Eg; Cyathea.
- The sporophytic plant is dominant and differentiated into root, stem, and leaf. Sporophyte reproduces by the formation of spores and spores are produced in the sporangium. Sporangia are aggregated in sorus.
- The plant may be homosporous or may be heterosporous.
- Spores develop into gametophyte known as prothallus. Prothallus develops from homospores are monoecious. Prothallus developing from heterosporous are dioecious.
- Antheridium is male reproductive organ. Archegonium is female reproductive organ. Antherozoid is multi-flagellated.
- Water is necessary for fertilization. A zygote is the final product of fertilization. The zygote develops into the embryo and then into the sporophyte.
- There is the distinct alternate of generation seen in the lifecycle of Pteridophyta.
- In xylem vessel is absent and in phloem companion cell is absent.
Lesson
Plantae
Subject
Biology
Grade
Grade 11
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