Answer: B. Shrubland
Thornscrub ecosystem is found in between the Sonoran and Chihuahuan Deserts. It is typical shrubland. It consist of small trees like velvet mesquite and shrubs like Catlaw acacia, cactus which are common in Sonoran Desert. The Thornscrub shrubland exhibit distinct wet and dry seasons therefore, it possess growth of annual and perennial herbs. Therefore, the vegetation is determined by alternating dry and wet seasons.
Dr. Alvarez is doing research on the subfield of psychology called the behavioral neuroscience. Scientists from the field study the biological foundation of human behavioral characteristics. These scientists are trying to find out what physiological processes and anatomical structures are involved in certain aspects of human behavior.
Answer:
True
Explanation:
Oogenesis includes the formation of one egg cell from a single oocyte or egg mother cell. The diploid primary oocytes in the ovaries enter into the first meiotic division and form a haploid secondary oocyte and a haploid first polar body. After fertilization, the secondary oocytes complete the meiosis-II and forms one large ovum and a second polar body. The ovum formed by meiosis-II is much larger than the second polar body due to the unequal distribution of cytoplasm during meiosis-II. This imparts enough amount of cytoplasm in the zygote to support the mitosis without any cell growth.
