Answer:
As one age, the bodies become subtle to cold temperatures. This is generally due to decline in the metabolic rate. As one age, the bodies lose the tendency of producing sufficient heat to sustain the usual temperature of 98.6 degrees. In addition to this, thinning of the skin is another thing, which may contribute to the feeling of cold in older individuals.
With age, the physical tendency of the body declines, and the body does not function as it used to earlier. A decline in temperature can make the older adults very cold, even if they are dressed warmly. There are various researchers, which shows that older individuals exhibit low body temperatures in comparison to the younger ones.
Some of the factors that can contribute to cold sensitivity in older adults are:
1. Poor metabolic rate
2. Loss of elasticity of the blood vessels.
3. Low blood pressure
4. Thinning of the fat layer underneath the skin
5. Physical issues and exposure to cold water
Answer:
Carolus Linnaeus is known as "Father of taxonomy" as he made two most important contributions to taxonomy:
1. The system of binomial nomenclature (a 2-part naming method)
2. A hierarchical classification system.
His system of classification consists of a hierarchy of groupings in phylum, class, order, family, genus, and species with the kingdom as the largest and most inclusive group while species as the smallest group.
We still use this system today but we have made some changes like we have added a level in the hierarchy which is domain the broadest level of life and all living things now fit into three domains: Archaea, Bacteria, and Eukarya. Within each domain there are kingdoms.
Thus, his contributions led to the development of modern taxonomy.
b contains chloroplyll
c is immobile
d both a and c
Answer:
The given statement is true.
The flowers which contain both male and female reproductive structures are called bisexual flowers.
Stamen refers to the male reproductive part of the flower. It consisted of anther and filament.
Pistil refers to the female reproductive part of a flower. It consisted of stigma, style, and ovary.
So, bisexual flowers are those which contain both stamen and pistil.
For example, Hibiscus, Sunflower, Lily, Rose, Tulip, Daffodil, Mustard, Brinjal, Tomato, et cetera.
B. epidermis
C. guard cell
D. spongy mesophyll
The structure of plants that allowed the first land plants to survive out of water is known as the cuticle. Thus, the correct option for this question is A.
The first plants that were tends to live on land are the Non-vascular plants, which include mosses and liverworts, which were the first-ever land plants. They do not have much of an internal support system but have slightly simpler material for the same tasks.
Early in their history, land plants also evolved a cuticle. The cuticle is the structure that involves a waxy layer on the outer surface of the aerial parts of a plant that helps to prevent water loss. Sometimes cuticle with details of epidermal cell structure is preserved in fossil plants.
Guard cells play an important role in the opening and closing of the stomata. While epidermis is the outer cell which prevent the whole plant form injury.
Therefore, the structure of plants that allowed the first land plants to survive out of water is known as the cuticle. Thus, the correct option for this question is A.
To learn more about Cuticle, refer to the link:
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Answer:
A
Explanation: