The 'Foramen of Panizza' is a small opening found in the heart of which animal, allowing blood to bypass the pulmonary circuit? MCQ with Answer and Explanation

Explanation:
Folate (vitamin B₉) is crucial for DNA synthesis and cell division. Inadequate folate early in pregnancy can cause neural tube defects like spina bifida in the fetus. Supplementation is recommended.

Explanation:
An ecosystem is a functional unit comprising both the biotic (living organisms) and abiotic (non-living physical environment like soil, water, sunlight) components interacting as a system. A population is a group of individuals of the same species living in a specific area and interbreeding. A community consists of all the interacting populations of different species living together in a defined area, not just one species. Thus, statements 1 and 3 are correct.

Explanation:
The heart is situated in the mediastinum slightly left of the midline. All other statements are true.