Antihistamines are drugs that are used to treat allergic rhinitis (both seasonal and perennial) and other form of allergies that cause hives or urticaria. They can give relief when a patient has nasal congestion, sneezing or hives because of pollen, dust, or animal allergy (allergens). Second generation antihistamines such as loratidine are prescribed for seasonal allergies because they are less sedating than the first generation antihistamines.
The Electromagnetic spectrum<span> lists the most powerful EMR, </span>gamma<span> rays, to the least powerful EMR, radio waves. In addition, the highest energy waves (</span>gamma<span>, x-ray) have the shortest wavelengths. The lowest energy waves, radio waves, have longest wavelengths.</span>
Answer:
D)Lycophyta
Explanation:
The seedless vascular plants or the pteridophyte forms one phylum of the plant kingdom. The pteridophyte kingdom can be classified into three groups: the Sphenophytes, the pteridophytes and the Lycophytes.
The Lycophyte group contains about 1000 living species as it is the most primitive group of vascular plants.
The species is characterised by the presence of the microphyll like the Selaginella and Lycopodium.
The rhizoids of the gametophyte of these plants form the mycorrhizal association with the fungi.
Thus, Option-D is the correct answer.
1. They are easy to raise.
2. Have many offspring during per mating.
3. It can fertilize itself.
4. It has varieties in genotype that is easy observable.
5. It has phenotype that is also easy observable.
